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 A067181 #13 Dec 01 2021 10:41:56 %S A067181 0,1,0,3,0,0,6,0,0,36,28,0,66,0,0,78,0,0,378,496,0,1596,0,0,8385,0,0, %T A067181 5778,5995,0,8778,0,0,47895,0,0,67896,58996,0,196878,0,0,468996,0,0, %U A067181 887778,1788886,0,4896885,0,0,5897895,0,0,13999986,15997996,0,38997696 %N A067181 Duplicate of A062688. %F A067181 a(n) = A062688(n), n > 0. - _R. J. Mathar_, Sep 30 2008 %Y A067181 Cf. A055264. %K A067181 dead %O A067181 0,4 %A A067181 _Amarnath Murthy_, Jan 09 2002 %E A067181 More terms from _Sascha Kurz_, Mar 23 2002