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 A078284 #5 Dec 05 2013 19:55:57 %S A078284 1,5,34,253,2024,16867,144575,1265032,11235584,101120256,919272960, %T A078284 8342666880,77009232720,715008573240,6667341335024,62500632501585, %U A078284 588241236472080,5555611677791867,52632110631712424,500005051001268028 %N A078284 a(n) = A078283(n)/n. %Y A078284 Cf. A078282, A078283. %K A078284 base,nonn %O A078284 1,2 %A A078284 _Amarnath Murthy_, Nov 25 2002 %E A078284 More terms from _Sascha Kurz_, Jan 04 2003