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A109780
n! sum{k=1 to n} H(k) (n-k)!, where H(k) = sum{j=1 to k} 1/j.
+0
2
1, 5, 32, 310, 4924, 126648, 4869192, 258608880, 17973530784, 1576566817920, 170028329630400, 22092970356011520, 3402396234446595840, 612619882946124157440, 127484451712085785228800, 30358069092698014483200000
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 21 10:15 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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