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.

A216379 Triangle of generalized Stirling numbers S_{n,n}(5,k) read by rows (n>=0, n<=k<=5n) the sum of which is A182924.

Original entry on oeis.org

1, 1, 15, 25, 10, 1, 16, 1280, 9080, 16944, 12052, 3840, 580, 40, 1, 1296, 330480, 6148872, 28245672, 49658508, 41392620, 18428400, 4691412, 706833, 63375, 3285, 90, 1, 331776, 207028224, 8190885888, 74684104704, 253100173824, 405044582400, 351783415296, 181005401088, 58436640576, 12288192000, 1721191680, 162115584, 10228144, 423360, 10960, 160, 1
Offset: 0

Views

Author

Jean-François Alcover, Sep 06 2012

Keywords

Examples

			{1},
{1,15,25,10,1},
{16,1280,9080,16944,12052,3840,580,40,1}
...
		

Crossrefs

Cf. A182924.
Second row (n=1) is 5th row of A008277 (Stirling numbers S2).
Third row is 5th row of A078739 (Generalized Stirling numbers S_{2,2}).
Fourth row is 5th row of A078741 (Generalized Stirling numbers S_{3,3}).
Fifth row is 5th row of A090214 (Generalized Stirling numbers S_{4,4}).

Programs

  • Mathematica
    f[m_][n_, k_] := (-1)^k/k!*Sum[(-1)^p*Binomial[k, p]*FactorialPower[p, m]^n, {p, m, k}]; Table[f[n][5, k],{n,0,4}, {k, n, 5*n}]//Flatten