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 A203278 #7 Jun 02 2025 07:34:06 %S A203278 1,2,12,44,84,68,14328,836,24040,1231088,31063252,5495668,2474249308, %T A203278 4505692,130544952,2741953536,6519198872,11977808,2197436928400, %U A203278 5058240848,11783977054420,363453226568756,135517101268864,6345558675936,67883449330825012,1419845303575428 %N A203278 Row sums of triangle A202941. %C A203278 Conjecture. If p is odd prime, then a((p-1)/2)==2 (mod p) %Y A203278 Cf. A202941, A202917, A203269 %K A203278 nonn %O A203278 0,2 %A A203278 _Vladimir Shevelev_ and _Peter J. C. Moses_, Dec 31 2011