Search: id:A067700
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%I A067700
%S A067700 2,2,4,84,48048,1402298040,3343286067469920,950147368528779758457120,
%T A067700 44162749985403900797695349661715200,
%U A067700 440762756830149092247907829817237094171949712000
%N A067700 2*(n^2)!*product_{k=0..n-1} k!/(n+k)!
%Y A067700 A079402(n) = (a(n)/2)^2.
%Y A067700 Sequence in context: A088895 A075806 A050923 this_sequence A037010 A114695 
               A134084
%Y A067700 Adjacent sequences: A067697 A067698 A067699 this_sequence A067701 A067702 
               A067703
%K A067700 nonn,easy
%O A067700 0,1
%A A067700 Lekraj Beedassy (blekraj(AT)yahoo.com), Feb 05 2002
%E A067700 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. - N. J. A. Sloane (njas(AT)research.att.com), 
               Feb 10, 2002
%E A067700 Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Jan 06 2003

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