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 A134225 #5 Feb 08 2022 19:41:44 %S A134225 1,3,1,2,5,1,3,2,7,1,4,3,2,9,1,5,4,3,2,11,1,6,5,4,3,2,13,1,7,6,5,4,3, %T A134225 2,15,1,8,7,6,5,4,3,2,17,1,9,8,7,6,5,4,3,2,19,1 %N A134225 A007436 + A134082 - A000012 as infinite lower triangular matrices; where A000012 = (1; 1,1; 1,1,1; ...). %C A134225 Row sums = A034856: (1, 4, 8, 13, 19, 26, ...). %e A134225 First few rows of the triangle: %e A134225 1; %e A134225 3, 1; %e A134225 2, 5, 1; %e A134225 3, 2, 7, 1; %e A134225 4, 3, 2, 9, 1; %e A134225 5, 4, 3, 2, 11, 1; %e A134225 6, 5, 4, 3, 2, 13, 1; %e A134225 7, 6, 5, 4, 3, 2, 15, 1; %e A134225 ... %Y A134225 Cf. A007436, A134082, A034856. %K A134225 nonn,tabl %O A134225 1,2 %A A134225 _Gary W. Adamson_, Oct 14 2007