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 A179902 #7 Jun 02 2025 03:02:22 %S A179902 1,2,5,11,23,46,87,155,261,416,641,947,1355,1886 %N A179902 Row sums of triangle A179901. %C A179902 Conjectured mod 2 parity: (1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1,...) %F A179902 Row sums of triangle A179901 %e A179902 a(5) = 23 = sum of 5th row terms of triangle A179901: (1, + 4, + 6 + 8 + 4). %Y A179902 Cf. A179901. %K A179902 nonn %O A179902 1,2 %A A179902 _Gary W. Adamson_, Jul 31 2010