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 A132309 #5 Mar 05 2022 00:53:15 %S A132309 1,2,1,2,5,1,2,5,8,1,2,9,9,11,1,2,9,24,14,14,1,2,13,25,50,20,17,1,2, %T A132309 13,48,55,90,27,20,1,2,17,49,133,105,147,35,23,1,2,17,80,140,308,182, %U A132309 224,44,26,1 %N A132309 A007318^(-1) * A132307. %C A132309 Row sums = A077552: (1, 3, 8, 16, 32, 64, 128, ...). %F A132309 Inverse binomial transform of triangle A132307. %e A132309 First few rows of the triangle: %e A132309 1; %e A132309 2, 1; %e A132309 2, 5, 1; %e A132309 2, 5, 8, 1; %e A132309 2, 9, 9, 11, 1; %e A132309 2, 9, 24, 14, 14, 1; %e A132309 2, 13, 25, 50, 20, 17, 1; %e A132309 2, 13, 48, 55, 90, 27, 20, 1; %e A132309 ... %Y A132309 Cf. A132307, A077552. %K A132309 nonn,tabl %O A132309 0,2 %A A132309 _Gary W. Adamson_, Aug 18 2007