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 A134543 #8 Mar 26 2022 10:21:16 %S A134543 1,2,1,4,3,1,6,5,3,1,10,9,6,3,1,12,11,9,6,3,1,18,17,14,10,6,3,1,22,21, %T A134543 18,14,10,6,3,1,28,27,24,20,15,10,6,3,1,32,31,29,25,20,15,10,6,3,1 %N A134543 A134542 * A000012. %C A134543 Row sums = A015631: (1, 3, 8, 15, 29, 42, ...). %C A134543 Left border = A002088: (1, 2, 4, 6, 10, 12, 18, 22, ...). %C A134543 Conjecture: row terms starting from the right tend to the triangular series. %F A134543 A134542 * A000012 as infinite lower triangular matrices. Triangle read by rows, partial sums of A134542 terms starting from the right. %e A134543 First few rows of the triangle: %e A134543 1; %e A134543 2, 1; %e A134543 4, 3, 1; %e A134543 6, 5, 3, 1; %e A134543 10, 9, 6, 3, 1; %e A134543 12, 11, 9, 6, 3, 1; %e A134543 18, 17, 14, 10, 6, 3, 1; %e A134543 22, 21, 18, 14, 10, 6, 3, 1; %e A134543 28, 27, 24, 20, 15, 10, 6, 3, 1; %e A134543 ... %Y A134543 Cf. A134542, A002088, A015631. %K A134543 nonn,tabl,more %O A134543 1,2 %A A134543 _Gary W. Adamson_, Oct 31 2007