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 A131054 #6 May 29 2023 11:25:18 %S A131054 1,1,1,2,1,1,2,4,1,1,3,4,7,1,1,3,9,7,11,1,1,4,9,22,11,16,1,1,4,16,22, %T A131054 46,16,22,1,1,5,16,50,46,86,22,29,1,1,5,25,50,130,86,148,29,37,1,1,6, %U A131054 25,95,130,296,148,239,37,46,1,1 %N A131054 Triangle read by rows: A000012 * A119467 as infinite lower triangular matrices. %C A131054 Row sums = 2^n. %e A131054 First few rows of the triangle are: %e A131054 1; %e A131054 1, 1; %e A131054 2, 1, 1; %e A131054 2, 4, 1, 1; %e A131054 3, 4, 7, 1, 1; %e A131054 3, 9, 7, 11, 1, 1; %e A131054 4, 9, 22, 11, 16, 1, 1; %e A131054 4, 16, 22, 46, 16, 22, 1, 1; %e A131054 ... %Y A131054 Cf. A000012, A119467. %K A131054 nonn,tabl %O A131054 0,4 %A A131054 _Gary W. Adamson_, Jun 12 2007 %E A131054 a(46) = 5 inserted and more terms from _Georg Fischer_, May 29 2023