A157504 (det(I - M) - 1)/x where M_jk = (j*x)^k/k!.

-1, -2, -7, -40, -301, -2856, -32299, -416816, -5892345, -86464000, -1177909711, -8944121088, 349846341467, 29237270702080, 1585383533246925, 78578098584541184, 3843296406581515919, 190784066705549623296

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Formula

E.g.f.: (det(I - M) - 1)/x where M_jk = (j*x)^k/k!.

a(n) = A157503(n)/n.

Crossrefs

Cf. A157503.

Sequence in context: A069732 A346964 A277565 * A093985 A308876 A361597

Adjacent sequences: A157501 A157502 A157503 * A157505 A157506 A157507

Keyword

easy,sign

Author

Andrew J. Robbins, Mar 02 2009

Status

approved