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A001120
a(1) = 1; for n > 1, a(n) = n*a(n-1) + (-1)^n.
(Formerly M2760 N1110)
+0
4
1, 3, 8, 33, 164, 985, 6894, 55153, 496376, 4963761, 54601370, 655216441, 8517813732, 119249392249, 1788740883734, 28619854139745, 486537520375664, 8757675366761953, 166395831968477106, 3327916639369542121
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
AT&T Labs Research
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