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 A128185 #4 Feb 15 2022 01:52:42 %S A128185 1,2,1,2,1,1,2,1,1,1,2,1,0,1,1,2,1,1,0,1,1,2,1,1,0,0,1,1,2,1,0,1,0,0, %T A128185 1,1,2,1,1,1,0,0,0,1,1,2,1,1,0,1,0,0,0,1,1 %N A128185 A097806 * A051731. %C A128185 A128184 = A051731 * A097806 Row sums = 1, 3, 4, 5, 5, 6, 6, 6, 7, 7, ... (the first 10 terms of A108852). %F A128185 A097806 * A051731 as infinite lower triangular matrices. %e A128185 First few rows of the triangle: %e A128185 1; %e A128185 2, 1; %e A128185 2, 1, 1; %e A128185 2, 1, 1, 1; %e A128185 2, 1, 0, 1, 1; %e A128185 2, 1, 1, 0, 1, 1; %e A128185 2, 1, 1, 0, 0, 1, 1; %e A128185 2, 1, 0, 1, 0, 0, 1, 1; %e A128185 ... %Y A128185 Cf. A128184, A097806, A051731, A108852. %K A128185 nonn,tabl %O A128185 1,2 %A A128185 _Gary W. Adamson_, Feb 17 2007