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 A128133 #7 Feb 15 2022 11:12:24 %S A128133 1,0,2,-1,3,3,-2,3,8,4,-3,2,14,15,5,-4,0,20,35,24,6,-5,-3,25,65,69,35, %T A128133 7,-6,-7,28,105,154,119,48,8,-7,-12,28,154,294,308,188,63,9,-8,-18,24, %U A128133 210,504,672,552,279,80,10 %N A128133 Binomial transform of A128132. %C A128133 Row sums = A005183: (1, 2, 5, 13, 33, 81, 193, ...). %C A128133 A128132 * A007318 = A128134. %F A128133 A007318 * A128132 as infinite lower triangular matrices. %e A128133 First few rows of the triangle: %e A128133 1; %e A128133 0, 2; %e A128133 -1, 3, 3; %e A128133 -2, 3, 8, 4; %e A128133 -3, 2, 14, 15, 5; %e A128133 -4, 0, 20, 35, 24, 6; %e A128133 -5, -3, 25, 65, 69, 35, 7; %e A128133 ... %Y A128133 Cf. A128132, A007318, A128134, A005183. %K A128133 tabl,sign %O A128133 1,3 %A A128133 _Gary W. Adamson_, Feb 15 2007