A294292 Expansion of e.g.f. exp(1/((1+x)*(1+x^2)*(1+x^3)*(1+x^4)) - 1).

1, -1, 1, -7, 49, -181, 1561, -18691, 173377, -2150569, 28355761, -356432671, 5780298481, -95621235997, 1506345546889, -29605056916891, 624987953076481, -12495650070557521, 277892162543608417, -6701525504691986359, 160540685175500028721

Offset: 0

Author

Seiichi Manyama, Oct 27 2017

Keywords

• sign

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..442

Crossrefs

Column k=4 of A294289.

Programs

PARI

N=66; x='x+O('x^N); Vec(serlaplace(exp(1/((1+x)*(1+x^2)*(1+x^3)*(1+x^4))-1)))

Formula

E.g.f.: exp(1/((1+x)*(1+x^2)*(1+x^3)*(1+x^4)) - 1).