OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..47
MATHEMATICA
Table[Sum[Abs[StirlingS1[n+1, k+1]]StirlingS2[n, k], {k, 0, n}], {n, 0, 100}]
PROG
(Maxima) makelist(sum(abs(stirling1(n+1, k+1))*stirling2(n, k), k, 0, n), n, 0, 24);
CROSSREFS
KEYWORD
nonn
AUTHOR
Emanuele Munarini, Jul 04 2011
STATUS
approved