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A038157 n!*Sum(1/k!, k=1..n-2). +0
2
0, 0, 0, 6, 36, 200, 1230, 8652, 69272, 623520, 6235290, 68588300, 823059732, 10699776672, 149796873590, 2246953104060, 35951249665200, 611171244308672, 11001082397556402, 209020565553571980, 4180411311071439980, 87788637532500240000 (list; graph; listen)
OFFSET

0,4

LINKS

Index entries for sequences related to factorial numbers

MATHEMATICA

a=1; Table[a=(a-n)*(n+1); Abs[a], {n, 0, 40}] [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 20 2009]

CROSSREFS

Sequence in context: A048980 A055299 A000551 this_sequence A006812 A111989 A064238

Adjacent sequences: A038154 A038155 A038156 this_sequence A038158 A038159 A038160

KEYWORD

nonn,new

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.


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