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 A129570 #5 Feb 20 2022 01:23:41 %S A129570 1,1,1,0,2,1,-2,3,3,1,-6,4,6,4,1,-14,4,10,10,5,1,-30,0,15,20,15,6,1, %T A129570 -62,-14,21,35,35,21,7,1,-125,-48,27,56,70,56,28,8,1,-245,-118,27,84, %U A129570 126,126,84,36,9,1 %N A129570 A007318 * A129360. %C A129570 Row sums = A119968: (1, 2, 3, 5, 9, 16, 27, ...). A129571 = A129360 * A007318. %F A129570 Binomial transform of A129360 (as infinite lower triangular matrices). %e A129570 First few rows of the triangle: %e A129570 1; %e A129570 1, 1; %e A129570 0, 2, 1; %e A129570 -2, 3, 3, 1; %e A129570 -6, 4, 6, 4, 1; %e A129570 -14, 4, 10, 10, 5, 1; %e A129570 -30, 0, 15, 20, 15, 6, 1; %e A129570 -62, -14, 21, 35, 35, 21, 7, 1; %e A129570 ... %Y A129570 Cf. A007318, A129360, A119968, A129571. %K A129570 tabl,sign %O A129570 1,5 %A A129570 _Gary W. Adamson_, Apr 22 2007