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 A083961 #6 Aug 25 2014 12:13:01 %S A083961 1,1,1,1,1,1,1,1,1,1,1,176,10087,29601,341,3851,418301,451,5221,2, %T A083961 53391,1,1401,176,21,10087,823063786,29601,31801,3,4301,726,1,127451, %U A083961 15301,176,9021009,2326,10087,4,279051571,53391,801,1,121,1401,952,176,203051 %N A083961 a(n) = A083960(n)/A004151(n). %Y A083961 Cf. A083960. %K A083961 base,nonn %O A083961 1,12 %A A083961 _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 20 2003 %E A083961 Corrected and extended by _David Wasserman_, Dec 06 2004