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Search: id:A080958
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A080958 n!*(2/1 - 3/2 + 4/3 - .. + s*(n+1)/n), where s = (-1)^(n+1). +0
1
2, 1, 11, 14, 214, 444, 8868, 25584, 633456, 2342880, 69317280, 312888960, 10773578880, 57424792320, 2256224544000, 13869128448000, 612385401600000, 4264876094976000, 209080119919104000, 1627055289796608000 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n) = n! Sum{(-1)^(j+1) C(j+1, j)/j, j, 1, n}

E.g.f.: (x+(x+1)*ln(1+x))/(1-x^2). - Vladeta Jovovic (vladeta(AT)Eunet.yu), Mar 03 2003

CROSSREFS

Cf. A024167.

Adjacent sequences: A080955 A080956 A080957 this_sequence A080959 A080960 A080961

Sequence in context: A140316 A088587 A055459 this_sequence A138351 A120293 A063624

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 01 2003

page 1

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.


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