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 A144826 #4 Jun 02 2025 00:36:48 %S A144826 1,3,13,24,70,60,203,192,351,320,825,480,1378 %N A144826 Row sums of triangle A144825. %e A144826 a(3) = 13 = sum of row 3 terms, triangle A144825: (3 + 4 + 6). %Y A144826 A144825 %K A144826 nonn %O A144826 1,2 %A A144826 _Gary W. Adamson_, Sep 21 2008