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(det(I - M) - 1)/x where M_jk = (j*x)^k/k!.
0

%I #7 Feb 22 2015 23:26:46

%S -1,-2,-7,-40,-301,-2856,-32299,-416816,-5892345,-86464000,

%T -1177909711,-8944121088,349846341467,29237270702080,1585383533246925,

%U 78578098584541184,3843296406581515919,190784066705549623296

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

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

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

%Y Cf. A157503.

%K easy,sign

%O 1,2

%A _Andrew J. Robbins_, Mar 02 2009