OFFSET
0,3
COMMENTS
Also called Akiyama-Tanigawa transform of A027656.
FORMULA
a(n) = Sum_{k>=0} A249163(n,k) * (k+1).
E.g.f.: 1/(exp(x)*(2 - exp(x))^2).
a(n) ~ n! * n / (8 * (log(2))^(n+2)). - Vaclav Kotesovec, Jul 01 2018
EXAMPLE
a(0) = 1*1 = 1.
a(1) = 1*1 = 1.
a(2) = 1*1 + 2*2 = 5.
a(3) = 1*1 + 12*2 = 25.
a(4) = 1*1 + 50*2 + 24*3 = 173.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, May 28 2015
STATUS
approved