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A109792 E.g.f.: ln(1+x)/(1-x)^2. 0
1, 3, 14, 70, 444, 3108, 25584, 230256, 2342880, 25771680, 312888960, 4067556480, 57424792320, 861371884800, 13869128448000, 235775183616000, 4264876094976000, 81032645804544000, 1627055289796608000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..19.

FORMULA

a(n) = n!*Sum(Sum((-1)^(i+1)/i, i=1..k), k=1..n).

CROSSREFS

Cf. A001705, A092692.

Sequence in context: A006772 A009020 A186765 * A137177 A158196 A191649

Adjacent sequences:  A109789 A109790 A109791 * A109793 A109794 A109795

KEYWORD

easy,nonn

AUTHOR

Vladeta Jovovic, Aug 14 2005

STATUS

approved

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Last modified May 24 16:26 EDT 2013. Contains 225624 sequences.