OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..450
FORMULA
D-finite with recurrence a(n) = (2*n-2)*a(n-1) - (n^2-n)*a(n-2) + (n^2-3*n+2)*a(n-3). - Robert Israel, Apr 29 2021
MAPLE
a:= proc(n) option remember; `if`(n=0, 1, -add(
a(n-j)*binomial(n-1, j-1)*j!, j=2..n))
end:
seq(a(n), n=0..25); # Alois P. Heinz, Sep 30 2017
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/(x-1))))
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Sep 30 2017
STATUS
approved