Search: id:A060856
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%I A060856
%S A060856 1,14,6006,140229804,278607172289160,67867669180627125604080,
%T A060856 2760171874087743799855959353857200,
%U A060856 24486819823897171791550434989846505231774984000
%N A060856 Multi-dimensional Catalan numbers: diagonal T(n,n+2) of A060854.
%F A060856 a(n) = 0!*1!*..*(k-1)! *(k*n)! / ( n!*(n+1)!*..*(n+k-1)! ) for k=n+2
%Y A060856 Sequence in context: A064075 A157824 A159372 this_sequence A030531 A147686 
               A048913
%Y A060856 Adjacent sequences: A060853 A060854 A060855 this_sequence A060857 A060858 
               A060859
%K A060856 nonn,easy
%O A060856 1,2
%A A060856 R. H. Hardin (rhhardin(AT)att.net), May 03 2001

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