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

1,2

FORMULA

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

CROSSREFS

Cf. A001705, A092692.

Sequence in context: A001579 A006772 A009020 this_sequence A137177 A158196 A009637

Adjacent sequences: A109789 A109790 A109791 this_sequence A109793 A109794 A109795

KEYWORD

easy,nonn

AUTHOR

Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 14 2005

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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