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A091041
Alternating row sums of triangle A091039 (scaled second columns of (k,k)-Stirling2 arrays).
1
1, 2, 0, -8, 324, -530, -1112688, 169476046, 144151873344, -449531744387330, -660618519039237888, 83329012852592671058686, -2072231651447029998880551936, -1674940664087026476131857832322050, 1501486075410203396595208137534328983552
OFFSET
1,2
FORMULA
a(n)=sum(A091039(n, k)*(-1)^(k+1), k=1..n), n>=1.
CROSSREFS
Sequence in context: A009099 A193247 A373697 * A140415 A105819 A153616
KEYWORD
sign,easy
AUTHOR
Wolfdieter Lang, Jan 23 2004
STATUS
approved