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 A168312 #5 Feb 08 2022 22:53:39 %S A168312 1,2,1,0,0,1,4,2,0,1,0,0,0,0,1,0,0,2,0,0,1,0,0,0,0,0,0,1,8,4,0,2,0,0, %T A168312 0,1,0,0,0,0,0,0,0,0,1,0,0,0,0,2,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0, %U A168312 4,0,2,0,0,0,0,0,1 %N A168312 Triangle read by rows, replace 1's of triangle A115361 starting from the right with (1, 2, 4, 8, ...). %C A168312 Row sums = A038712: (1, 3, 1, 7, 1, 3, 1, 15, ...). %F A168312 Triangle read by rows, replace 1's in triangle A115361 starting from the right with (1, 2, 4, 8, ...). %e A168312 First few rows of the triangle: %e A168312 1; %e A168312 2, 1; %e A168312 0, 0, 1; %e A168312 4, 2, 0, 1; %e A168312 0, 0, 0, 0, 1; %e A168312 0, 0, 2, 0, 0, 1; %e A168312 0, 0, 0, 0, 0, 0, 1; %e A168312 8, 4, 0, 2, 0, 0, 0, 1; %e A168312 0, 0, 0, 0, 0, 0, 0, 0, 1; %e A168312 0, 0, 0, 0, 2, 0, 0, 0, 0, 1; %e A168312 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1; %e A168312 0, 0, 4, 0, 0, 2, 0, 0, 0, 0, 0, 1; %e A168312 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1; %e A168312 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1; %e A168312 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1; %e A168312 16, 8, 0, 4, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1; %e A168312 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1; %e A168312 ... %Y A168312 Cf. A115361, A038712. %K A168312 nonn,tabf %O A168312 1,2 %A A168312 _Gary W. Adamson_, Nov 22 2009