A292935 E.g.f.: exp(exp(-x) - 1).

1, -1, 2, -5, 15, -52, 203, -877, 4140, -21147, 115975, -678570, 4213597, -27644437, 190899322, -1382958545, 10480142147, -82864869804, 682076806159, -5832742205057, 51724158235372, -474869816156751, 4506715738447323, -44152005855084346

Offset: 0

Author

Seiichi Manyama, Sep 27 2017

Keywords

• sign

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..576

Crossrefs

Column k=0 of A292948.

Cf. A000110.

Programs

PARI

x='x+O('x^66); Vec(serlaplace(exp(exp(-x)-1)))

Formula

a(n) = (-1)^n * A000110(n).

G.f.: Sum_{k>=0} (-x)^k / Product_{j=1..k} (1 + j*x). - Ilya Gutkovskiy, Dec 14 2019