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 A131324 #8 Feb 26 2022 10:51:27 %S A131324 1,1,1,1,1,1,1,3,1,1,1,1,5,1,1,1,5,1,7,1,1,1,1,11,1,9,1,1,1,7,1,19,1, %T A131324 11,1,1,1,1,19,1,29,1,13,1,1,1,9,1,39,1,41,1,15,1,1 %N A131324 2*A049310 - A000012(signed). %C A131324 Row sums = A062114: (1, 2, 3, 6, 9, 16, 25, ...). %F A131324 2*A049310 - A000012(signed + - + - ... by columns). %e A131324 First few rows of the triangle: %e A131324 1; %e A131324 1, 1; %e A131324 1, 1, 1; %e A131324 1, 3, 1, 1; %e A131324 1, 1, 5, 1, 1; %e A131324 1, 5, 1, 7, 1, 1, %e A131324 1, 1, 11, 1, 9, 1, 1; %e A131324 1, 7, 1, 19, 1, 11, 1, 1; %e A131324 ... %Y A131324 Cf. A049310, A062114, A131325, A131326, A131327. %K A131324 nonn,tabl,more %O A131324 0,8 %A A131324 _Gary W. Adamson_, Jun 28 2007