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 A131896 #6 Mar 04 2022 02:05:42 %S A131896 1,4,3,9,4,5,16,5,6,7,25,6,7,8,9,36,7,8,9,10,11,49,8,9,10,11,12,13,64, %T A131896 9,10,11,12,13,14,15,81,10,11,12,13,14,15,16,17,100,11,12,13,14,15,16, %U A131896 17,18,19 %N A131896 A000012 * A131843. %C A131896 Row sums = A000566: (1, 7, 18, 34, 55, 81, ...), binomial transform of (1, 6, 5, 0, 0, 0, ...). %C A131896 A131894 = A131843 * A000012. %F A131896 A000012 * A131843 as infinite lower triangular matrices. %e A131896 First few rows of the triangle: %e A131896 1; %e A131896 4, 3; %e A131896 9, 4, 5; %e A131896 16, 5, 6, 7; %e A131896 25, 6, 7, 8, 9; %e A131896 36, 7, 8, 9, 10, 11; %e A131896 49, 8, 9, 10, 11, 12, 13; %e A131896 64, 9, 10, 11, 12, 13, 14, 15; %e A131896 ... %Y A131896 Cf. A131843, A000566. %K A131896 nonn,tabl %O A131896 1,2 %A A131896 _Gary W. Adamson_, Jul 24 2007