A036070 Expansion of (-1+1/(1-4*x)^4)/(16*x); related to A038846.

1, 10, 80, 560, 3584, 21504, 122880, 675840, 3604480, 18743296, 95420416, 477102080, 2348810240, 11408506880, 54760833024, 260113956864, 1224065679360, 5712306503680, 26456998543360, 121702193299456

Offset

0,2

Links

Table of n, a(n) for n=0..19.

W. Lang, On generalizations of Stirling number triangles, J. Integer Seqs., Vol. 3 (2000), #00.2.4.

Index entries for linear recurrences with constant coefficients, signature (16, -96, 256, -256).

Formula

a(n) = 4^(n-1)*binomial(n+4, 3); G.f. (-1+(1-4*x)^(-4))/(x*4^2).

Crossrefs

Cf. A038846, A001787. a(n)= A030526(n+1, 1) (first column of triangle).

Sequence in context: A000575 A220485 A055285 * A257286 A125373 A093145

Adjacent sequences: A036067 A036068 A036069 * A036071 A036072 A036073

Keyword

easy,nonn

Author

Wolfdieter Lang

Status

approved