A069657 Sum( S(n,k) * M(k-1), k=1..n), where S(n,k) = Stirling numbers of the second kind, M(n) = Motzkin numbers, A001006.

0, 1, 2, 6, 24, 115, 628, 3818, 25455, 183968, 1428184, 11824098, 103794727, 961461179, 9360372700, 95448502365, 1016413911387, 11273822075837, 129950445723958, 1553488011957986, 19225242250821071, 245899882175001580, 3245812116097119188, 44155099624566615247

Offset

0,3

Links

Table of n, a(n) for n=0..23.

Crossrefs

Cf. A006531, A001006.

Sequence in context: A224255 A326348 A128088 * A369766 A211321 A242820

Adjacent sequences: A069654 A069655 A069656 * A069658 A069659 A069660

Keyword

nonn

Author

N. J. A. Sloane, Jun 06 2002

Status

approved