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 A130584 #4 Mar 09 2016 06:30:01 %S A130584 1,2,1,4,2,2,8,4,6,2,16,8,12,8,4,32,16,22,20,20,2,64,32,42,40,60,12,6, %T A130584 128,64,84,72,140,42,42,4,256,128,170,128,280,112,168,32,6,512,256, %U A130584 342,240,508,252,504,144,54,4 %N A130584 A007318 * A054522. %F A130584 T(n,n)=A000010(n+1). %F A130584 Binomial transform of A054522 as infinite lower triangular matrices. %e A130584 First few rows of the triangle are: %e A130584 1; %e A130584 2, 1; %e A130584 4, 2, 2; %e A130584 8, 4, 6, 2; %e A130584 16, 8, 12, 8, 4; %e A130584 32, 16, 22, 20, 20, 2; %e A130584 64, 32, 42, 40, 60, 12, 6; %e A130584 ... %Y A130584 Cf. A007318, A054522, A001792 (row sums), A130585, A000010. %K A130584 nonn,tabl %O A130584 0,2 %A A130584 _Gary W. Adamson_, Jun 06 2007