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 A115955 #2 Mar 30 2012 18:59:13 %S A115955 1,0,1,0,1,1,0,0,0,1,0,0,1,1,1,0,0,0,0,0,1,0,0,0,1,1,1,1,0,0,0,0,0,0, %T A115955 0,1,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,1,1,1,1,1,0,0, %U A115955 0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1,1,1,1,1,1 %N A115955 Product of A115952 and summing matrix (1/(1-x),x). %C A115955 Row sums are A057979(n+3). %e A115955 Triangle begins %e A115955 1, %e A115955 0, 1, %e A115955 0, 1, 1, %e A115955 0, 0, 0, 1, %e A115955 0, 0, 1, 1, 1, %e A115955 0, 0, 0, 0, 0, 1, %e A115955 0, 0, 0, 1, 1, 1, 1, %e A115955 0, 0, 0, 0, 0, 0, 0, 1, %e A115955 0, 0, 0, 0, 1, 1, 1, 1, 1, %e A115955 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, %e A115955 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, %e A115955 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, %e A115955 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1 %K A115955 nonn,tabl %O A115955 0,1 %A A115955 _Paul Barry_, Feb 02 2006