This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A127099 #7 Jul 05 2014 14:27:27
%S A127099 1,3,2,4,0,3,7,6,0,4,6,0,0,0,5,12,8,9,0,0,6,8,0,0,0,0,0,7,15,14,0,12,
%T A127099 0,0,0,8,13,0,12,0,0,0,0,0,9,18,12,0,0,15,0,0,0,0,10,12,0,0,0,0,0,0,0,
%U A127099 0,0,11,28,24,21,16,0,18,0,0,0,0,0,12,14,0,0,0,0,0,0,0,0,0,0,0,13,24,16,0,0
%N A127099 Triangle T(n,m) = A126988 *A127093 read by rows.
%C A127099 Multiply the infinite lower triangular matrices A126988 and A127093.
%F A127099 T(n,m) = sum_{j=m..n} A126988(n,j)*A127093(j,m).
%F A127099 T(n,1) = A000203(n).
%e A127099 First few rows of the triangle are:
%e A127099 1;
%e A127099 3, 2;
%e A127099 4, 0, 3;
%e A127099 7, 6, 0, 4;
%e A127099 6, 0, 0, 0, 5;
%e A127099 12, 8, 9, 0, 0, 6;
%e A127099 8, 0, 0, 0, 0, 0, 7;
%e A127099 15, 14, 0, 12, 0, 0, 0, 8;
%e A127099 13, 0, 12, 0, 0, 0, 0, 0, 9;
%e A127099 18, 12, 0, 0, 15, 0, 0, 0, 0, 10;
%e A127099 ...
%Y A127099 Cf. A060640 (row sums), A000203, A127093, A127094, A123229, A127096, A127097, A127098, A127013, A127057.
%K A127099 nonn,tabl
%O A127099 1,2
%A A127099 _Gary W. Adamson_, Jan 05 2007
%E A127099 Extended by _R. J. Mathar_, Aug 18 2009