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 A177446 #9 Jun 03 2023 07:28:30 %S A177446 1,2,0,2,1,0,3,2,0,0,3,2,1,0,0,3,3,2,0,0,0,3,3,2,2,0,0,0,3,3,3,4,0,0, %T A177446 0,0,3,3,3,4,1,0,0,0,0,3,3,3,6,2,0,0,0,0,0,3,3,3,6,2,2,0,0,0,0,0,3,3, %U A177446 3,6,3,4,0,0,0,0,0,0,3,3,3,6,3,4,2,0,0,0,0,0,0 %N A177446 Triangle read by rows: A000012 * A177444 * the diagonalized variant of A120562. %C A177446 Row sums = A177445. Rows apparently tend to 3 * A120562 = 3 * (1, 1, 1, 2, 1, 2, 2, 3, 1, 3, ...). %F A177446 Triangle read by rows, M*Q*R; such that M = an infinite lower triangular matrix with all 1's, Q = triangle A177444, and R = the diagonalized variant of A120562 (A120562 in the diagonal and the rest zeros). %e A177446 First few rows of the triangle = %e A177446 1; %e A177446 2, 0; %e A177446 2, 1, 0; %e A177446 3, 2, 0, 0; %e A177446 3, 2, 1, 0, 0; %e A177446 3, 3, 2, 0, 0, 0; %e A177446 3, 3, 2, 2, 0, 0, 0; %e A177446 3, 3, 3, 4, 0, 0, 0, 0; %e A177446 3, 3, 3, 4, 1, 0, 0, 0, 0; %e A177446 3, 3, 3, 6, 2, 0, 0, 0, 0, 0; %e A177446 3, 3, 3, 6, 2, 2, 0, 0, 0, 0, 0; %e A177446 3, 3, 3, 6, 3, 4, 0, 0, 0, 0, 0, 0; %e A177446 3, 3, 3, 6, 3, 4, 2, 0, 0, 0, 0, 0, 0; %e A177446 3, 3, 3, 6, 3, 6, 4, 0, 0, 0, 0, 0, 0, 0; %e A177446 3, 3, 3, 6, 3, 6, 4, 3, 0, 0, 0, 0, 0, 0, 0; %e A177446 ... %Y A177446 Cf. A120562, A177444, A177445. %K A177446 nonn,tabl %O A177446 0,2 %A A177446 _Gary W. Adamson_, May 08 2010 %E A177446 Definition corrected by _Georg Fischer_, May 31 2023