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 A302177 #3 Apr 03 2018 12:04:07 %S A302177 1,6,11,31,46,71,91,136,171,221,266,311,366,441,501,566 %N A302177 Partial sums of A302176. %Y A302177 Cf. A302176. %K A302177 nonn,more %O A302177 0,2 %A A302177 _N. J. A. Sloane_, Apr 03 2018