Search: id:A127893
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%I A127893
%S A127893 1,3,1,6,6,1,10,21,9,1,15,56,45,12,1,21,126,165,78,15,1,28,252,495,364,
%T A127893 120,18,1,36,462,1287,1365,680,171,21,1,45,792,3003,4368,3060,1140,231,
%U A127893 24,1,55,1287,6435,12376
%N A127893 Riordan array (1/(1-x)^3,x/(1-x)^3).
%C A127893 Row sums are A052529(n+1). Diagonal sums are A095263. Inverse is A127894.
%F A127893 Number triangle T(n,k)=C(n+2k+2,n-k)
%e A127893 Triangle begins
%e A127893 1,
%e A127893 3, 1,
%e A127893 6, 6, 1,
%e A127893 10, 21, 9, 1,
%e A127893 15, 56, 45, 12, 1,
%e A127893 21, 126, 165, 78, 15, 1,
%e A127893 28, 252, 495, 364, 120, 18, 1,
%e A127893 36, 462, 1287, 1365, 680, 171, 21, 1,
%e A127893 45, 792, 3003, 4368, 3060, 1140, 231, 24, 1,
%e A127893 55, 1287, 6435, 12376, 11628, 5985, 1771, 300, 27, 1,
%e A127893 66, 2002, 12870, 31824, 38760, 26334, 10626, 2600, 378, 30, 1
%Y A127893 Sequence in context: A133545 A153091 A124847 this_sequence A127895 A152685 
               A116412
%Y A127893 Adjacent sequences: A127890 A127891 A127892 this_sequence A127894 A127895 
               A127896
%K A127893 easy,nonn,tabl
%O A127893 0,2
%A A127893 Paul Barry (pbarry(AT)wit.ie), Feb 04 2007

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