A293016 E.g.f.: exp(-x^2 * exp(x)).

1, 0, -2, -6, 0, 100, 570, 798, -15176, -163368, -700650, 3112450, 84347868, 738909444, 1555721986, -54879912570, -955420939440, -7454556070352, 13202860260654, 1329363428217354, 20878556441998660, 145324350344133660, -1185240365741022822

Offset: 0

Author

Seiichi Manyama, Sep 28 2017

Keywords

• sign

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..526

Crossrefs

Column k=2 of A293019.

Programs

Maple

f := series(exp(-x^2 * exp(x)), x = 0, 101): 1, seq(factorial(n) * coeff(f, x^n), n = 1..100); # Muniru A Asiru, Oct 31 2017

Mathematica

With[{nn=30},CoefficientList[Series[Exp[-x^2Exp[x]],{x,0,nn}],x] Range[ 0,nn]!] (* Harvey P. Dale, Apr 21 2019 *)

PARI

x='x+O('x^66); Vec(serlaplace(exp(-x^2*exp(x))))