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 1-10 of 11 results. Next

A014511 a(n) = floor( Gamma(n+1/3) ).

Original entry on oeis.org

2, 0, 1, 2, 9, 40, 214, 1355, 9940, 82834, 773118, 7988887, 90540729, 1116669003, 14888920041, 213407853922, 3272253760146, 53446811415729, 926411397872639, 16984208960998389, 328361373245968867
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    seq(floor(evalf(GAMMA(n+1/3),100)), n=0..24);
  • Mathematica
    a[n_] := Floor[Gamma[n + 1/3]]; Array[a, 21, 0] (* Amiram Eldar, Sep 20 2019 *)

A014513 a(n) = floor( Gamma(n+1/4) ).

Original entry on oeis.org

3, 0, 1, 2, 8, 35, 184, 1155, 8376, 69106, 639232, 6552134, 73711509, 902965985, 11964299312, 170491265198, 2599991794272, 42249866656927, 728810199831991, 13300786146933842, 256040133328476465
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    seq(floor(evalf(GAMMA(n+1/4),100)), n=0..24);
  • Mathematica
    a[n_] := Floor[Gamma[n + 1/4]]; Array[a, 21, 0] (* Amiram Eldar, Sep 20 2019 *)

A014512 a(n) = floor( Gamma(n+2/3) ).

Original entry on oeis.org

1, 0, 1, 4, 14, 68, 389, 2593, 19884, 172328, 1665837, 17768938, 207304278, 2625854188, 35886673906, 526337883959, 8245960182038, 137432669700633, 2427977164711192, 45322240407942257, 891337394689531069
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    seq(floor(evalf(GAMMA(n+2/3),100)), n=0..24);
  • Mathematica
    a[n_] := Floor[Gamma[n + 2/3]]; Array[a, 21, 0] (* Amiram Eldar, Sep 20 2019 *)

A014514 a(n) = floor( Gamma(n+3/4) ).

Original entry on oeis.org

1, 0, 1, 4, 16, 78, 453, 3057, 23698, 207358, 2021746, 21733773, 255371835, 3255990905, 44769874946, 660355655453, 10400601573396, 174210076354396, 3092228855290534, 57979291036697518, 1145090997974775999, 23760638207976601980, 516793881023491093069
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Magma
    [Floor(Gamma(n + 3/4)): n in [0..25]]; // Vincenzo Librandi, Aug 01 2025
  • Maple
    seq(floor(evalf(GAMMA(n+3/4),100)), n=0..24);
  • Mathematica
    a[n_] := Floor[Gamma[n + 3/4]]; Array[a, 21, 0] (* Amiram Eldar, Sep 20 2019 *)

A014516 Nearest integer to Gamma(n + 1/3).

Original entry on oeis.org

3, 1, 1, 3, 9, 40, 214, 1355, 9940, 82834, 773118, 7988888, 90540730, 1116669003, 14888920041, 213407853923, 3272253760147, 53446811415729, 926411397872639, 16984208960998390, 328361373245968868, 6676681256001366975, 142435866794695828799, 3181067691748206843170, 74224912807458159673978
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    [ seq(round(evalf(GAMMA(n+1/3),100)), n=0..24) ];
  • Mathematica
    a[n_] := Round[Gamma[n + 1/3]]; Array[a, 25, 0] (* Amiram Eldar, Sep 20 2019 *)
  • PARI
    a(n) = round(gamma(n+1/3)); \\ Michel Marcus, Sep 13 2018

Extensions

Corrected and extended by Robert Israel, Sep 12 2018

A014517 Nearest integer to Gamma(n+2/3).

Original entry on oeis.org

1, 1, 2, 4, 15, 69, 389, 2594, 19884, 172328, 1665838, 17768938, 207304278, 2625854188, 35886673906, 526337883960, 8245960182038, 137432669700634, 2427977164711192, 45322240407942258, 891337394689531069
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    [ seq(round(evalf(GAMMA(n+2/3),100)), n=0..24) ];
  • Mathematica
    a[n_] := Round[Gamma[n + 2/3]]; Array[a, 21, 0] (* Amiram Eldar, Sep 20 2019 *)
  • PARI
    a(n) = round(gamma(n + 2/3)); \\ Michel Marcus, Nov 05 2018

Extensions

a(15), a(17), and a(19) corrected by Sean A. Irvine, Nov 04 2018

A014518 Nearest integer to Gamma(n+1/4).

Original entry on oeis.org

4, 1, 1, 3, 8, 35, 185, 1155, 8377, 69106, 639233, 6552134, 73711509, 902965986, 11964299312, 170491265198, 2599991794272, 42249866656927, 728810199831991, 13300786146933842, 256040133328476466
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    [ seq(round(evalf(GAMMA(n+1/4),100)), n=0..24) ];
  • Mathematica
    a[n_] := Round[Gamma[n + 1/4]]; Array[a, 21, 0] (* Amiram Eldar, Sep 20 2019 *)
  • PARI
    a(n) = round(gamma(n + 1/4)); \\ Michel Marcus, Nov 05 2018

Extensions

a(20) corrected by Sean A. Irvine, Nov 04 2018

A014521 Nearest integer to Gamma(n+1/2).

Original entry on oeis.org

2, 1, 1, 3, 12, 52, 288, 1871, 14034, 119292, 1133278, 11899423, 136843365, 1710542068, 23092317922, 334838609874, 5189998453040, 85634974475162, 1498612053315336, 27724322986333718, 540624298233507504
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    [ seq(round(evalf(GAMMA(n+1/2),100)), n=0..24) ];
  • Mathematica
    Table[Round[Gamma[n + 1/2]], {n, 0, 26}]
  • PARI
    a(n) = round(gamma(n + 1/2)); \\ Michel Marcus, Nov 05 2018

Extensions

a(15) corrected by Sean A. Irvine, Nov 04 2018

A014522 Nearest integer to Gamma(n+3/4).

Original entry on oeis.org

1, 1, 2, 4, 17, 79, 453, 3058, 23698, 207359, 2021746, 21733773, 255371836, 3255990905, 44769874946, 660355655454, 10400601573397, 174210076354396, 3092228855290534, 57979291036697519, 1145090997974775999, 23760638207976601980, 516793881023491093070
Offset: 0

Views

Author

Keywords

References

  • M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 255.

Crossrefs

Programs

  • Maple
    [ seq(round(evalf(GAMMA(n+3/4),100)), n=0..24) ];
  • Mathematica
    a[n_] := Round[Gamma[n + 3/4]]; Array[a, 23, 0] (* Amiram Eldar, Sep 20 2019 *)
  • PARI
    a(n) = round(gamma(n+3/4)) \\ Felix Fröhlich, Nov 05 2018

Extensions

a(15), a(16), and a(19) corrected by Sean A. Irvine, Nov 05 2018

A284994 Floor(Gamma(n/2)).

Original entry on oeis.org

1, 1, 0, 1, 1, 2, 3, 6, 11, 24, 52, 120, 287, 720, 1871, 5040, 14034, 40320, 119292, 362880, 1133278, 3628800, 11899423, 39916800, 136843365, 479001600, 1710542068, 6227020800, 23092317922, 87178291200, 334838609873, 1307674368000, 5189998453040
Offset: 1

Views

Author

Clark Kimberling, Apr 08 2017

Keywords

Comments

The bisections are A000142 (factorials) and A014510.

Examples

			Let s = sqrt(Pi); for n>=1, gamma(n/2) takes the values s, 1, s/2, 1, 3s/4, 2, 15s/8, 6, so that a(n) begins with 1,1,0,1,1,2,3,6.
		

Crossrefs

Programs

  • Mathematica
    Table[Floor[Gamma[n/2]], {n, 1, 35}]

Formula

a(n) = floor(Gamma(n/2)).
Showing 1-10 of 11 results. Next