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 A127953 #4 Feb 15 2022 02:10:33 %S A127953 1,-2,2,-2,-1,3,-2,-4,2,4,-2,-7,-3,7,5,-2,-10,-12,4,14,6,-2,-13,-25, %T A127953 -10,20,23,7,-2,-16,-42,-40,10,48,34,8,-2,-19,-63,-91,-35,63,91,47,9, %U A127953 -2,-22,-88,-168,-140,28,168,152,62,10 %N A127953 Triangle, A097805 * A126615. %C A127953 Row sums = (1, 0, 0, 0, ...). %F A127953 A097805 * A126615 as infinite lower triangular matrices. %e A127953 First few rows of the triangle: %e A127953 1; %e A127953 -2, 2; %e A127953 -2, -1, 3; %e A127953 -2, -4, 2, 4; %e A127953 -2, -7, -3, 7, 5; %e A127953 -2, -10, -12, 4, 14, 6; %e A127953 -2, -13, -25, -10, 20, 23, 7; %e A127953 ... %Y A127953 Cf. A097805, A126615. %K A127953 tabl,sign %O A127953 1,2 %A A127953 _Gary W. Adamson_, Feb 09 2007