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 A134224 #5 Mar 25 2022 00:36:24 %S A134224 1,4,1,3,6,1,4,3,8,1,5,4,3,10,1,6,5,4,3,12,1,7,6,5,4,3,14,1,8,7,6,5,4, %T A134224 3,16,1,9,8,7,6,5,4,3,18,1,10,9,8,7,6,5,4,3,20,1 %N A134224 A004736 + A134082 - I as infinite lower triangular matrices; I = Identity matrix. %C A134224 Row sums = A052905: (1, 5, 10, 16, 23, 31, 40, ...). %e A134224 First few rows of the triangle: %e A134224 1; %e A134224 4, 1; %e A134224 3, 6, 1; %e A134224 4, 3, 8, 1; %e A134224 5, 4, 3, 10, 1; %e A134224 6, 5, 4, 3, 12, 1; %e A134224 7, 6, 5, 4, 3, 14, 1; %e A134224 ... %Y A134224 Cf. A004736, A052905, A134082. %K A134224 nonn,tabl %O A134224 0,2 %A A134224 _Gary W. Adamson_, Oct 14 2007