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 A133094 #9 Mar 07 2022 02:37:43 %S A133094 1,3,1,5,3,1,7,7,5,1,9,14,14,5,1,11,25,30,16,7,1,13,41,55,41,27,7,1, %T A133094 15,63,91,91,77,29,9,1,17,92,140,182,182,92,44,9,1,19,129,204,336,378, %U A133094 246,156,46,11,1 %N A133094 A007318 * A133080 * A097806, as infinite lower triangular matrices. %C A133094 Row sums give A133095. %C A133094 Binomial transform of an infinite lower triangular matrix with (1,1,1,...) in the main diagonal, (2,1,2,1,...) in the subdiagonal and (0,1,0,1,...) in the subsubdiagonal. %e A133094 First few rows of the triangle: %e A133094 1; %e A133094 3, 1; %e A133094 5, 3, 1; %e A133094 7, 7, 5, 1; %e A133094 9, 14, 14, 5, 1; %e A133094 11, 25, 30, 16, 7, 1; %e A133094 13, 41, 55, 41, 27, 7, 1; %e A133094 ... %Y A133094 Cf. A133080, A097806, A133095. %K A133094 nonn,tabl %O A133094 1,2 %A A133094 _Gary W. Adamson_, Sep 09 2007