A294470 E.g.f.: Product_{k>0} (1-x^k/k)^k.

1, -1, -2, 0, 6, 90, 240, 2100, 1680, -28560, -682080, -7835520, -134497440, -1059458400, -13047914880, -138646347840, -1130671301760, 3558932657280, 93341485036800, 7903311136680960, 149238605943947520, 3997338754242113280, 86934078099901992960

Offset: 0

Author

Seiichi Manyama, Oct 31 2017

Keywords

• sign

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..451

Crossrefs

Cf. A292359.

Cf. A181541, A294469, A294471.

Programs

PARI

N=66; x='x+O('x^N); Vec(serlaplace(prod(k=1, N, (1-x^k/k)^k)))