OFFSET
0,3
COMMENTS
FORMULA
a(n) = Sum_{k=0..n} (-1)^k*(A225466(n, k), n >= 0.
E.g.f.: exp(2*x)*exp((1 - exp(3*x))) (Sheffer property).
a(n) = (1/e)*SUm_{m>=0} ((-1)^m / m!)*(2+3*m)^n, n >= 0, (DobiĆski type formula).
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Wolfdieter Lang, Apr 10 2017
STATUS
approved