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.

Showing 1-4 of 4 results.

A182279 Numbers n such that 30n+{11, 13, 17, 19, 23} are 5 consecutive primes.

Original entry on oeis.org

0, 3, 49, 535, 647, 700, 742, 1459, 1844, 4805, 5523, 5561, 6524, 6727, 7511, 8253, 8960, 10871, 11599, 12040, 13258, 15505, 17293, 17881, 21115, 21126, 22036, 25606, 26526, 27657, 28598, 29200, 31951, 33628, 34083, 35465, 35623, 36375, 39084, 39119, 40362
Offset: 1

Views

Author

Zak Seidov, Apr 23 2012

Keywords

Comments

All terms are congruent to {0, 3} mod 7.

Examples

			a(3) = 49 = A014561(5), a(4) = 535 = A014561(15).
		

Crossrefs

Subsequence of A014561.
Cf. A182282.

Programs

  • PARI
    isok(n) = isprime(p=30*n+11) && ((q=nextprime(p+1))==(30*n+13)) && ((r=nextprime(q+1))==(30*n+17)) && ((s=nextprime(r+1))==(30*n+19)) && ((t=nextprime(s+1))==(30*n+23)); \\ Michel Marcus, Oct 19 2013

A182387 Numbers k such that 210*k+{11,13,17,19,23,29,31} are 7 consecutive primes.

Original entry on oeis.org

0, 789, 5089, 56669, 75048, 88116, 100172, 122183, 187771, 214298, 322935, 413420, 445838, 593886, 648863, 667224, 736358, 772329, 868588, 888020, 890616, 907211, 945016, 1052954, 1078331, 1106177, 1146724, 1223888, 1432230, 1452437, 1458355, 1509878, 1535216
Offset: 1

Views

Author

Zak Seidov, Apr 27 2012

Keywords

Comments

Subsequence of A182282: a(2)=789=A182282(3), a(3)=5089=A182282(7), etc.

Crossrefs

Programs

  • Mathematica
    Select[Range[0,1600000],And@@PrimeQ[210 #+{11,13,17,19,23,29,31}]&] (* Harvey P. Dale, Mar 04 2013 *)

A182393 Numbers n such that 210*n + {11,13,17,19,23,29,31,37} are 8 consecutive primes.

Original entry on oeis.org

0, 75048, 122183, 445838, 868588, 1078331, 3152249, 4337790, 4962337, 5101537, 5572485, 6638215, 6948906, 8155956, 8298280, 9217084, 9752564, 11416369, 13331645, 13539754, 17782872, 19480161, 25473918, 25614474, 26299945, 27593165, 28335777, 28906807, 29231650
Offset: 1

Views

Author

Zak Seidov, Apr 27 2012

Keywords

Comments

Subsequence of A182387: a(2) = 75048 = A182387(5) = A182282(7), a(3) = 122183 = A182387(8) = A182282(29).

Crossrefs

Formula

a(n) = (A022011(n) - 11)/210. - Hugo Pfoertner, Nov 18 2022

A182450 Numbers n such that 210*n + {11,13,17,19,23,29,31,37,41} are 9 consecutive primes.

Original entry on oeis.org

0, 868588, 1078331, 4337790, 4962337, 6948906, 13539754, 30448177, 32218557, 39275297, 41670729, 52746284, 61193646, 81620584, 108499172, 118175956, 157531734, 198162240, 206181306, 208637331, 252388467, 258429278, 273526639, 305726202, 316425865, 383749862
Offset: 1

Views

Author

Zak Seidov, Apr 29 2012

Keywords

Comments

Subsequence of A182393: a(2)=868588=A182393(5), a(3)=1078331=A182387(6).

Crossrefs

Showing 1-4 of 4 results.