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 A134446 #6 Mar 25 2022 00:33:35 %S A134446 1,1,2,2,2,3,2,4,3,4,3,4,6,4,5,3,6,6,8,5,6,4,6,9,8,10,6,7,4,8,9,12,10, %T A134446 12,7,8,5,8,12,12,15,12,14,8,9,5,10,12,16,15,18,14,16,9,10 %N A134446 A128174 * A002260. %C A134446 Row sums = A002623: (1, 3, 7, 13, 22, 34, ...). %F A134446 A128174 * A002260 as infinite lower triangular matrices. %e A134446 First few rows of the triangle: %e A134446 1; %e A134446 1, 2; %e A134446 2, 2, 3; %e A134446 2, 4, 3, 4; %e A134446 3, 4, 6, 4, 5; %e A134446 3, 6, 6, 8, 5, 6; %e A134446 4, 6, 9, 8, 10, 6, 7; %e A134446 ... %Y A134446 Cf. A002260, A128174, A002623. %K A134446 nonn,tabl %O A134446 1,3 %A A134446 _Gary W. Adamson_, Oct 25 2007