OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..450
FORMULA
a(n) = (-1)^n * A293117(n).
MATHEMATICA
CoefficientList[Series[E^(-x^2/(1+x)), {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Sep 30 2017 *)
PROG
(PARI) x='x+O('x^66); Vec(serlaplace(exp(-x^2/(1+x))))
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Sep 30 2017
STATUS
approved