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Search: id:A092956
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| 1, 8, 90, 1344, 25200, 570240, 15135120, 461260800, 15878903040, 609493248000, 25812039052800, 1195656969830400, 60138698780160000, 3264143527636992000, 190165504623494400000, 11836497605427855360000, 783921372659482337280000
(list; graph; listen)
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OFFSET
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0,2
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MAPLE
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seq((2*n+2)!/(n+2)/n!, n=0..17); (Deutsch)
a:=n->sum(mul (j-k+n, j=1..n), k=1..n): seq(a(n), n=1..17); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 04 2007
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CROSSREFS
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Row sums of A105725.
Sequence in context: A128304 A056784 A166769 this_sequence A034667 A116149 A155615
Adjacent sequences: A092953 A092954 A092955 this_sequence A092957 A092958 A092959
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KEYWORD
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easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 25 2004
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 18 2005
Edited by N. J. A. Sloane (njas(AT)research.att.com) at the suggestion of Andrew Plewe, May 27 2007
More terms from Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 04 2007
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