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 A131336 #2 Mar 30 2012 17:25:22 %S A131336 1,1,1,2,1,1,3,3,2,1,5,4,4,2,1,8,8,7,5,3,1,13,12,12,9,7,3,1,21,21,20, %T A131336 17,14,8,4,1,34,33,33,29,26,17,11,4,1,55,55,54,50,46,34,25,12,5,1 %N A131336 A131334 * A000012. %C A131336 Left border = Fibonacci numbers. Row sums = A131337. %F A131336 A131334 * A000012, (partial row sums of A131334 starting from the right). %e A131336 First few rows of the triangle are: %e A131336 1; %e A131336 1, 1; %e A131336 2, 1, 1; %e A131336 3, 3, 2, 1; %e A131336 5, 4, 4, 2, 1; %e A131336 8, 8, 7, 5, 3, 1; %e A131336 13, 12, 12, 9, 7, 3, 1; %e A131336 21, 21, 20 17, 14, 8, 4, 1; %e A131336 ... %Y A131336 Cf. A131334, A131332, A131333, A131335, A131337. %K A131336 nonn,tabl %O A131336 1,4 %A A131336 _Gary W. Adamson_, Jun 29 2007