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 A130452 #12 Jul 24 2024 03:05:54 %S A130452 1,3,1,6,3,1,12,6,3,1,24,12,6,3,1,48,24,12,6,3,1,96,48,24,12,6,3,1, %T A130452 192,96,48,24,12,6,3,1,384,192,96,48,24,12,6,3,1,768,384,192,96,48,24, %U A130452 12,6,3,1,1536,768,384,192,96,48,24,12,6,3,1,3072,1536,768,384,192,96,48,24,12,6,3,1 %N A130452 Triangle read by rows: A097806 * A130321 as infinite lower triangular matrices. %C A130452 Row sums = A033484: (1, 4, 10, 22, 46, 94, 190, ...). %F A130452 A097806 * A130321 as infinite lower triangular matrices. A097806 = the pairwise operator, A130321 = [1; 2,1; 4,2,1; ...]. Triangle, A003945 (1, 3, 6, 12, 24, 48, ...) in every column. %e A130452 First few rows of the triangle: %e A130452 1; %e A130452 3, 1; %e A130452 6, 3, 1; %e A130452 12, 6, 3, 1; %e A130452 24, 12, 6, 3, 1; %e A130452 48, 24, 12, 6, 3, 1; %e A130452 ... %Y A130452 Cf. A003945, A033484, A097806, A130321. %K A130452 nonn,tabl %O A130452 1,2 %A A130452 _Gary W. Adamson_, May 26 2007 %E A130452 a(28) = 1 inserted and more terms from _Georg Fischer_, May 29 2023