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 A126136 #10 Jul 03 2017 08:03:12
%S A126136 1,2,1,4,3,2,8,7,9,3,16,15,28,16,6,32,31,75,55,40,10,64,63,186,156,
%T A126136 165,75,20,128,127,441,399,546,336,175,35,256,255,1016,960,1596,1176,
%U A126136 896,336,70,512,511,2295,2223,4320,3564,3528,1848,756,126,1024,1023,5110,5020,11115,9855,11880,7680,4620,1470,252
%N A126136 Binomial transform of A107430.
%C A126136 Row sums = powers of 3.
%F A126136 Given M = A107430 as an infinite lower triangular matrix and P = Pascal's triangle, A126136 = P*M.
%e A126136 First few rows of the triangle are:
%e A126136 1;
%e A126136 2, 1;
%e A126136 4, 3, 2;
%e A126136 8, 7, 9, 3;
%e A126136 16, 15, 28, 16, 6;
%e A126136 32, 31, 75, 55, 40, 10;
%e A126136 ...
%o A126136 (PARI) tabl(nn) = {p = matrix(nn+1, nn+1, n, k, binomial(n-1, k-1)); m = matrix(nn+1, nn+1, n, k, if (k<=n, binomial(n-1, (k-1)\2), 0)); r = p*m; for (n=0, nn, for (k=0, n, print1(r[n+1,k+1], ", ");); print(););} \\ _Michel Marcus_, Jul 03 2017
%Y A126136 Cf. A107430.
%Y A126136 Columns : A000079, A000225, A058877, A027540
%K A126136 nonn,tabl
%O A126136 0,2
%A A126136 _Gary W. Adamson_, Dec 18 2006
%E A126136 More terms from _Philippe Deléham_, Jul 02 2017