OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..372
FORMULA
a(n) = Sum_{k=0..n} (2*n-k)!/(2*n-2*k+1)! * Stirling2(n,k).
PROG
(PARI) a(n) = sum(k=0, n, (2*n-k)!/(2*n-2*k+1)!*stirling(n, k, 2));
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Nov 08 2023
STATUS
approved