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 A155083 #4 Jan 11 2015 02:18:10 %S A155083 1,1,1,2,3,1,5,9,6,1,13,29,25,10,1,35,92,100,55,15,1,96,291,377,266, %T A155083 105,21,1,267,915,1375,1169,602,182,28,1 %N A155083 A directed animal related triangle. %C A155083 First column is A005773. Row sums are A129775. %F A155083 G.f.: 1/(1-xy-x/(1-x-xy-x^2/(1-x-xy-x^2/(1-x-xy-x^2/(1-...))))) (continued fraction). %e A155083 Triangle begins %e A155083 1, %e A155083 1, 1, %e A155083 2, 3, 1, %e A155083 5, 9, 6, 1, %e A155083 13, 29, 25, 10, 1, %e A155083 35, 92, 100, 55, 15, 1, %e A155083 96, 291, 377, 266, 105, 21, 1, %e A155083 267, 915, 1375, 1169, 602, 182, 28, 1 %K A155083 easy,nonn,tabl %O A155083 0,4 %A A155083 _Paul Barry_, Jan 19 2009