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 A131333 #2 Mar 30 2012 17:25:21 %S A131333 1,1,1,2,1,1,3,2,2,1,5,3,4,2,1,8,5,7,4,3,1,13,8,12,7,7,3,1,21,13,20, %T A131333 12,14,7,4,1,34,21,33,20,26,14,11,4,1,55,34,54,33,46,26,25,11,5,1 %N A131333 A131332 * A000012. %C A131333 Leftmost two columns = Fibonacci numbers. Row sums = A029907: (1, 2, 4, 8, 15, 28, 51,...). %F A131333 A131332 * A000012, where A000012 = (1; 1,1; 1,1,1;...). Partial sums of A131332 rows starting from the right. %e A131333 First few rows of the triangle are: %e A131333 1; %e A131333 1, 1; %e A131333 2, 1, 1; %e A131333 3, 2, 2, 1; %e A131333 5, 3, 4, 2, 1; %e A131333 8, 5, 7, 4, 3, 1; %e A131333 13, 8, 12, 7, 7, 3, 1; %e A131333 21, 13, 20, 12, 14, 7, 4, 1; %e A131333 ... %Y A131333 Cf. A131332, A131334, A131335, A131336. %K A131333 nonn,tabl %O A131333 1,4 %A A131333 _Gary W. Adamson_, Jun 29 2007