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 A134841 #6 Mar 27 2022 18:52:01 %S A134841 1,2,3,3,3,4,4,6,4,7,5,5,5,5,6,6,9,8,9,6,12,7,7,7,7,7,7,8,8,12,8,14,8, %T A134841 12,8,15,9,9,12,9,9,12,9,9,13,10,15,10,15,12,15,10,15,10,18 %N A134841 Triangle read by rows: first n terms of n-th row of an array formed by A126988 * A053731(transform). %C A134841 Right border = sigma(n), A000203: (1, 3, 4, 7, 6, 12, ...). %C A134841 Row sums = A001157: (1, 5, 10, 21, 26, 50, 50, ...). %e A134841 First few terms of the array: %e A134841 1, 1, 1, 1, 1, 1, 1, ... %e A134841 2, 3, 2, 3, 2, 3, 2, ... %e A134841 3, 3, 4, 3, 3, 4, 3, ... %e A134841 4, 6, 4, 7, 4, 6, 4, ... %e A134841 5, 5, 5, 5, 5, 6, 5, ... %e A134841 6, 9, 8, 9, 6, 12, 6, ... %e A134841 7, 7, 7, 7, 7, 7, 8, ... %e A134841 ... %e A134841 First few rows of the triangle: %e A134841 1; %e A134841 2, 3; %e A134841 3, 3, 4; %e A134841 4, 6, 4, 7; %e A134841 5, 5, 5, 5, 6; %e A134841 6, 9, 8, 9, 6, 12; %e A134841 7, 7, 7, 7, 7, 7, 8, %e A134841 ... %Y A134841 Cf. A051731, A126988, A001157, A000203. %K A134841 nonn,tabl %O A134841 0,2 %A A134841 _Gary W. Adamson_, Nov 12 2007