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Search: id:A067700
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| A067700 |
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2*(n^2)!*product_{k=0..n-1} k!/(n+k)! |
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+0
2
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| 2, 2, 4, 84, 48048, 1402298040, 3343286067469920, 950147368528779758457120, 44162749985403900797695349661715200, 440762756830149092247907829817237094171949712000
(list; graph; listen)
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OFFSET
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0,1
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CROSSREFS
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A079402(n) = (a(n)/2)^2.
Adjacent sequences: A067697 A067698 A067699 this_sequence A067701 A067702 A067703
Sequence in context: A088895 A075806 A050923 this_sequence A037010 A114695 A134084
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KEYWORD
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nonn,easy
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), Feb 05 2002
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EXTENSIONS
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The original definition was unclear (at least to me) and the explicit formula provided did not match the sequence. The new definition was provided by Robert G. Wilson v, and is a close match to the beginning of the old version. - njas, Feb 10, 2002
Edited by Dean Hickerson (dean(AT)math.ucdavis.edu), Jan 06 2003
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