OFFSET
0,2
MATHEMATICA
Table[Sum[StirlingS1[n+1, k+1]^2k!, {k, 0, n}], {n, 0, 100}]
PROG
(Maxima) makelist(sum(stirling1(n+1, k+1)^2*k!, k, 0, n), n, 0, 24);
CROSSREFS
KEYWORD
nonn
AUTHOR
Emanuele Munarini, Jul 04 2011
STATUS
approved