cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Previous Showing 11-20 of 22 results. Next

A037052 a(n)-th prime is the smallest prime containing exactly n 0's.

Original entry on oeis.org

1, 26, 169, 1230, 9593, 78499, 1270608, 5761456, 50847535, 1300005927, 4118054814, 73301896140, 1320811971703, 29844570422670, 169969662554552, 547863431950009, 2623557157654234, 24739954287740861, 1347790196060095448, 10720710117789005898, 161902001837504830334
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A034388, A037053.

Programs

  • Mathematica
    (* see A037053 for f *) PrimePi[ Table[ f[n], {n, 1, 12}]]

Formula

a(n) = A000720(A037053(n)). - Daniel Suteu, Aug 08 2019

Extensions

Edited and extended by Robert G. Wilson v, Jul 04 2003
a(0) = 1 inserted and a(13)-a(17) added by Daniel Suteu, Aug 08 2019
a(18)-a(20) calculated using Kim Walisch's primecount and added by Amiram Eldar, Sep 03 2024

A037070 a(n)-th prime is the smallest prime containing exactly n 9's.

Original entry on oeis.org

1, 8, 46, 303, 5133, 17984, 216816, 1270607, 41146179, 420243162, 2524038155, 36159205628, 343392568900, 1955010428258, 15237833654620, 260219446617109, 2621513397605657, 24619309639366177, 233874804775621799, 684559920583084690, 20920441130654929928, 200085344903558463823
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037071, A034388.
Cf. A037052, A037054, A037056, A037058, A037060, A037062, A037064, A037066, A037068.

Programs

  • Mathematica
    (* see A037071 for f *) PrimePi[ Table[ f[n, 9], {n, 1, 13}]]

Formula

a(n) = A000720(A037071(n)). - Amiram Eldar, Jul 21 2025

Extensions

One more term from Vladeta Jovovic, Jan 10 2002
a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(14)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 21 2025

A037054 a(n)-th prime is the smallest prime containing exactly n 1's.

Original entry on oeis.org

1, 6, 5, 187, 1242, 9682, 86538, 733339, 5821735, 56196114, 503193257, 4161915701, 41621368333, 383118399789, 3549047966306, 33056584174792, 309353882119895, 2651938403956789, 27417323062119921, 27417323062119920, 2461813897281353902, 23422580231698331842
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037055, A034388.
Cf. A037052, A037056, A037058, A037060, A037062, A037064, A037066, A037068, A037070.

Programs

  • Mathematica
    (* see A037055 for f *) PrimePi[ Table[ f[n, 1], {n, 1, 13}]]

Formula

a(n) = A000720(A037055(n)). - Amiram Eldar, Jul 20 2025

Extensions

a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(14)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 20 2025

A037056 a(n)-th prime is the smallest prime containing exactly n 2's.

Original entry on oeis.org

2, 1, 48, 331, 2490, 94500, 1283805, 1402294, 12238270, 891573671, 975688072, 77612456753, 715763987889, 748327378591, 6944174236934, 580400102242316, 5209104353769836, 5710407472211223, 510579443617388387, 4806424039483242581, 45763276831811185976, 440594267900327752100
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037057, A034388.
Cf. A037052, A037054, A037058, A037060, A037062, A037064, A037066, A037068, A037070.

Programs

  • Mathematica
    (* see A037057 for f *) PrimePi[ Table[ f[n, 2], {n, 1, 13}]]

Formula

a(n) = A000720(A037057(n)). - Amiram Eldar, Jul 20 2025

Extensions

a(0)=2 prepended by Sean A. Irvine, Dec 06 2020
a(14)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 20 2025

A037058 a(n)-th prime is the smallest prime containing exactly n 3's.

Original entry on oeis.org

1, 2, 51, 345, 2602, 27062, 232466, 1935248, 17950160, 155123231, 1022275037, 13076476440, 119921146473, 1100928006234, 9986615648246, 39453679683959, 636484070277727, 8477216022186037, 80079195779613271, 758351887226957873, 7209429409009441899, 68676498683402943115
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037059, A034388.
Cf. A037052, A037054, A037056, A037060, A037062, A037064, A037066, A037068, A037070.

Programs

  • Mathematica
    (* see A037059 for f *) PrimePi[ Table[ f[n, 3], {n, 1, 13}]]

Formula

a(n) = A000720(A037059(n)). - Amiram Eldar, Jul 20 2025

Extensions

Edited and extended by Robert G. Wilson v, Jul 04 2003
a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(14)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 20 2025

A037060 a(n)-th prime is the smallest prime containing exactly n 4's.

Original entry on oeis.org

1, 13, 86, 603, 4620, 37299, 1533327, 22568442, 23574105, 210014510, 1893613727, 17241353173, 493582559244, 13474975578701, 71056054875827, 1180956491651370, 10728352138939963, 103710009988272649, 960912626678471376, 1005142876338508545, 50686811139876408310, 288867303325879381560
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037061, A034388.
Cf. A037052, A037054, A037056, A037058, A037062, A037064, A037066, A037068, A037070.

Programs

  • Mathematica
    (* see A037061 for f *) PrimePi[ Table[ f[n, 4], {n, 1, 12}]]

Formula

a(n) = A000720(A037061(n)). - Amiram Eldar, Jul 20 2025

Extensions

a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(13)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 20 2025

A037062 a(n)-th prime is the smallest prime containing exactly n 5's.

Original entry on oeis.org

1, 3, 102, 733, 14319, 45741, 1004275, 3313338, 169807396, 259770566, 20255937351, 21366409911, 196256438549, 10949682060338, 16876678891444, 1376534319069676, 13702579963679833, 13947379867469643, 360360819534753751, 3421022095727840569, 93257415087729395138, 113268191247939457737
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037063, A034388.
Cf. A037052, A037054, A037056, A037058, A037060, A037064, A037066, A037068, A037070.

Programs

  • Mathematica
    (* see A037063 for f *) PrimePi[ Table[ f[n, 5], {n, 1, 12}]]

Formula

a(n) = A000720(A037063(n)). - Amiram Eldar, Jul 20 2025

Extensions

a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(13)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 20 2025

A037064 a(n)-th prime is the smallest prime containing exactly n 6's.

Original entry on oeis.org

1, 18, 121, 859, 15226, 54070, 1071206, 3933314, 34614430, 309084622, 2792083255, 61496476037, 1214237371612, 5255429125063, 105341326636887, 458846460486827, 15441107727480784, 16660543186177748, 832868428561305574, 1494006786965549890, 14206605445888164436, 135418222271099812357
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037065, A034388.
Cf. A037052, A037054, A037056, A037058, A037060, A037062, A037066, A037068, A037070.

Programs

  • Mathematica
    (* see A037065 for f *) PrimePi[ Table[ f[n, 6], {n, 1, 12}]]

Formula

a(n) = A000720(A037065(n)). - Amiram Eldar, Jul 20 2025

Extensions

One more terms from Hans Havermann, Jun 16 2001
a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(13)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 20 2025

A037066 a(n)-th prime is the smallest prime containing exactly n 7's.

Original entry on oeis.org

1, 4, 59, 275, 4924, 58623, 506877, 4546755, 30224014, 87818618, 2836649805, 14748299309, 251285857122, 603200604933, 17530836835060, 80446298927642, 2054098188682332, 9577010472498628, 67026825574168206, 1605887402218872982, 16520076587958693329, 156502536697199220470
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037067, A034388.
Cf. A037052, A037054, A037056, A037058, A037060, A037062, A037064, A037068, A037070.

Programs

  • Mathematica
    (* see A037067 for f *) PrimePi[ Table[ f[n, 7], {n, 1, 12}]]

Formula

a(n) = A000720(A037067(n)). - Amiram Eldar, Jul 21 2025

Extensions

a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(14)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 21 2025

A037068 a(n)-th prime is the smallest prime containing exactly n 8's.

Original entry on oeis.org

1, 23, 152, 1107, 8611, 70478, 1793210, 5156463, 45470645, 2074530409, 11397691034, 33578243459, 1603686087003, 2859644709998, 26622184513952, 518238694402971, 2339285051888769, 69641948074252447, 208626752630607267, 8383527978057824838, 119921750787289924042, 375732914981870085595
Offset: 0

Views

Author

Patrick De Geest, Jan 04 1999

Keywords

Links

Crossrefs

Cf. A000720, A037069, A034388.
Cf. A037052, A037054, A037056, A037058, A037060, A037062, A037064, A037066, A037070.

Programs

  • Mathematica
    (* see A037069 for f *) PrimePi[ Table[ f[n, 8], {n, 1, 13}]]

Formula

a(n) = A000720(A037069(n)). - Amiram Eldar, Jul 21 2025

Extensions

a(0)=1 prepended by Sean A. Irvine, Dec 06 2020
a(12) corrected and a(13)-a(21) calculated using Kim Walisch's primecount and added by Amiram Eldar, Jul 21 2025
Previous Showing 11-20 of 22 results. Next

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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