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 A134542 #8 Mar 26 2022 10:21:10 %S A134542 1,1,1,1,2,1,1,2,2,1,1,3,3,2,1,1,2,3,3,2,1,1,3,4,4,3,2,1,1,3,4,4,4,3, %T A134542 2,1,1,3,4,5,5,4,3,2,1,1,2,4,5,5,5,4,3,2,1 %N A134542 A134541 * A000012. %C A134542 Row sums = A002088: (1, 2, 4, 6, 10, 12, 18, 22, ...). %C A134542 A134542 * [1,2,3,...] = A015631: (1, 3, 8, 15, 29, 42, ...). %F A134542 A134541 * A000012 as infinite lower triangular matrices. %F A134542 Triangle read by rows, partial sums of A134541 terms starting from the right. %e A134542 First few rows of the triangle: %e A134542 1; %e A134542 1, 1; %e A134542 1, 2, 1; %e A134542 1, 2, 2, 1; %e A134542 1, 3, 3, 2, 1; %e A134542 1, 2, 3, 3, 2, 1; %e A134542 1, 3, 4, 4, 3, 2, 1; %e A134542 1, 3, 4, 4, 4, 3, 2, 1; %e A134542 1, 3, 4, 5, 5, 4, 3, 2, 1; %e A134542 1, 2, 4, 5, 5, 5, 4, 3, 2, 1; %e A134542 ... %Y A134542 Cf. A134541, A002088, A015631. %K A134542 nonn,tabl,more %O A134542 1,5 %A A134542 _Gary W. Adamson_, Oct 31 2007