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

A154308 a(n) = (n+1)^5*(5+n)!/120.

Original entry on oeis.org

1, 192, 10206, 344064, 9450000, 235146240, 5590680480, 130799370240, 3064161260160, 72648576000000, 1755018872006400, 43385497111756800, 1100535435333734400, 28694585299245465600, 769785401024640000000, 21259022134381903872000, 604515265659140419584000, 17698965059877321572352000
Offset: 0

Views

Author

Omar E. Pol, Jan 06 2009

Keywords

Comments

Row 5 of square array A152818.

Crossrefs

Programs

  • Magma
    [(n+1)^5*Factorial(5+n)/120: n in [0..20]]; // Vincenzo Librandi, Sep 11 2016
    
  • Mathematica
    Table[(n + 1)^5*(5 + n)!/120, {n, 0, 25}] (* G. C. Greubel, Sep 10 2016 *)
  • PARI
    for(n=0,25, print1((n+1)^5*(5+n)!/120, ", ")) \\ G. C. Greubel, Nov 24 2017

Formula

a(n) = A000142(n+1)*A000583(n+1)*A000389(n+5). - R. J. Mathar, Jan 17 2009
E.g.f.: (1 + 181*x + 3046*x^2 + 11606*x^3 + 12281*x^4 + 3125*x^5)/(1-x)^11. - R. J. Mathar, Dec 21 2011

Extensions

More terms from R. J. Mathar, Jan 17 2009
Showing 1-2 of 2 results.