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 A078464 #17 Mar 02 2013 17:14:03 %S A078464 2,6,50,64130,800046,137270954,1860277042,357975249026, %T A078464 1036802293087622,15013817846943906,47192717955016924590, %U A078464 10360599532897359064118,154361699651715243559786 %N A078464 Erroneous version of A177454. %K A078464 dead %O A078464 1,1 %A A078464 _Benoit Cloitre_, Jan 01 2003 %E A078464 Missing a(4) pointed out by _Gary Detlefs_, Feb 27 2013