OFFSET
0,3
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..200
FORMULA
a(n) ~ 2^(n - 1/2) * n^(n-1) / exp(n-1). - Vaclav Kotesovec, Jan 06 2019
PROG
(Sage)
def A321961List(l):
def row(n, dim):
m = 1
for k in range(dim-1, -1, -1):
m = 1 - (n+k)*x/m
return SR(1/m).series(x, dim).list()
return [sum(row(n-k, n+1)[k] for k in (0..n)) for n in (0..l-1)]
A321961List(16)
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Luschny, Dec 27 2018
STATUS
approved