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 1-2 of 2 results.

A154306 a(n) = (n+1)^3*(3+n)!/6.

Original entry on oeis.org

1, 32, 540, 7680, 105000, 1451520, 20744640, 309657600, 4849891200, 79833600000, 1381360780800, 25107347865600, 478826764416000, 9568689242112000, 200074178304000000, 4370687116443648000, 99607063051431936000
Offset: 0

Views

Author

Omar E. Pol, Jan 06 2009

Keywords

Comments

Row 3 of square array A152818.

Crossrefs

Programs

Formula

E.g.f.: (1 + 25*x + 67*x^2 + 27*x^3)/(1-x)^7. - R. J. Mathar, Dec 21 2011

Extensions

More terms from Sean A. Irvine, Dec 01 2009

A154307 a(n) = (n+1)^4*(4+n)!/24.

Original entry on oeis.org

1, 80, 2430, 53760, 1050000, 19595520, 363031200, 6812467200, 130947062400, 2594592000000, 53182390060800, 1129830653952000, 24898991749632000, 569337009905664000, 13505007035520000000, 332172220849717248000
Offset: 0

Views

Author

Omar E. Pol, Jan 06 2009

Keywords

Comments

Row 4 of square array A152818.

Crossrefs

Programs

  • Magma
    [(n+1)^4*Factorial(4+n)/24: n in [0..20]]; // Vincenzo Librandi, Sep 11 2016
  • Mathematica
    Table[(n + 1)^4*(4 + n)!/24, {n, 0, 25}] (* G. C. Greubel, Sep 10 2016 *)

Formula

E.g.f.: (1 + 71*x + 531*x^2 + 821*x^3 + 256*x^4)/(1-x)^9. - R. J. Mathar, Dec 21 2011

Extensions

Extended by Max Alekseyev, Apr 13 2009
Showing 1-2 of 2 results.