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 A081516 #6 May 23 2020 08:31:07 %S A081516 1,2,4,5,7,8,8,9,11,14,12,13,19,16,22,17,21,20,20,21,23,26,24,31,31, %T A081516 28,28,31,33,32,34,45,35,38,36,43,43,40,46,41,43,46,44,45,49,52,48,53, %U A081516 53,52,52,55,55,56,58,57,61,68,66,61,71,82,64,65,73,68,70,69 %N A081516 Final term in n-th row of A081517. %Y A081516 Cf. A081515, A081517. %K A081516 nonn %O A081516 1,2 %A A081516 _Amarnath Murthy_, Mar 27 2003 %E A081516 More terms from _Jinyuan Wang_, May 23 2020