A192547 sum(stirling1(n,k)*stirling1(n+1,k+1),k=0..n).

1, 1, 4, 41, 746, 20952, 837222, 45064203, 3140545942, 274969698158, 29537121873656, 3818716753252766, 584845275604394884, 104699320897565702206, 21661251169082551846770, 5128537368950263252563795, 1377694241395636643874812070

Offset

0,3

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..41

Mathematica

Table[Sum[StirlingS1[n, k]StirlingS1[n+1, k+1], {k, 0, n}], {n, 0, 100}]

Prog

(Maxima) makelist(sum(stirling1(n, k)*stirling1(n+1, k+1), k, 0, n), n, 0, 24);

Crossrefs

Sequence in context: A270703 A363302 A361182 * A006129 A244437 A265003

Adjacent sequences: A192544 A192545 A192546 * A192548 A192549 A192550

Keyword

nonn

Author

Emanuele Munarini, Jul 04 2011

Status

approved