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 A158303 #9 Dec 26 2023 12:24:47 %S A158303 1,1,2,1,4,2,1,6,6,8,1,8,12,32,8,1,10,20,80,40,32,1,12,30,160,120,192, %T A158303 32,1,14,42,280,280,672,224,128,1,16,56,448,560,1792,896,1024,128,1, %U A158303 18,72,672,1008,4032,2688,4608,1152,512 %N A158303 Triangle read by rows, A007318 * (A158300 * 0^(n-k)). %F A158303 Triangle read by rows, A007318 * (A158300 * 0^(n-k)). Equals binomial transform of an infinite lower triangular matrix with A158300: (1, 2, 2, 8, 8, 32, 32,...) as the main diagonal and the rest zeros. %e A158303 First few rows of the triangle = %e A158303 1; %e A158303 1, 2; %e A158303 1, 4, 2; %e A158303 1, 6, 6, 8; %e A158303 1, 8, 12, 32, 8; %e A158303 1, 10, 20, 80, 40, 32; %e A158303 1, 12, 30, 160, 120, 192, 32; %e A158303 1, 14, 42, 280, 280, 672, 224, 128; %e A158303 1, 16, 56, 448, 560, 1792, 896, 1024, 128; %e A158303 1, 18, 72, 672, 1008, 4032, 2688, 4608, 1152, 512; %e A158303 1, 20, 90, 960, 1680, 8064, 6720, 15360, 5760, 5120, 512; %e A158303 ... %Y A158303 Cf. A158300, A122983 (row sums), A054879, A066443 %K A158303 nonn,tabl %O A158303 0,3 %A A158303 _Gary W. Adamson_, Mar 15 2009