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 A081522 #6 May 24 2020 04:01:01 %S A081522 1,3,7,7,8,17,12,15,22,29,20 %N A081522 Last term in row n of A081521. %Y A081522 Cf. A081521, A081523, A081524. %K A081522 nonn,more %O A081522 1,2 %A A081522 _Amarnath Murthy_, Mar 27 2003 %E A081522 a(8)-a(11) from _Jinyuan Wang_, May 24 2020