A171839 Equal to A171368*A007318.

1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 3, 2, 1, 0, 0, 6, 8, 3, 1, 0, 0, 15, 22, 15, 4, 1, 0, 0, 36, 68, 52, 24, 5, 1, 0, 0, 91, 198, 191, 100, 35, 6, 1, 0, 0, 232, 586, 651, 425, 170, 48, 7, 1, 0, 0, 603, 1718, 2203, 1656, 820, 266, 63, 8, 1, 0, 0, 1585, 5047, 7285, 6299, 3591, 1435, 392, 80

Offset

0,11

Comments

Another version of A114586.

Links

Table of n, a(n) for n=0..73.

Formula

Sum_{k, 0<=k<=n} T(n,k)*x^k = A099323(n+1), A126120(n), A005043(n), A000957(n+1), A117641(n) for x = -2, -1, 0, 1, 2 respectively.

Example

Triangle begins : 1 ; 0,0 ; 1,0,0 ; 1,1,0,0 ; 3,2,1,0,0 ; 6,8,3,1,0,0 ; ...

Crossrefs

Sequence in context: A305234 A021761 A221960 * A257778 A325111 A242928

Adjacent sequences: A171836 A171837 A171838 * A171840 A171841 A171842

Keyword

nonn,tabl

Author

Philippe Deléham, Dec 19 2009

Status

approved