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 A277842 #14 Nov 05 2016 08:41:48 %S A277842 1,81,6064606,1334647986999812,970906913413864886205472630, %T A277842 3914970565374711299589044295533654728633307, %U A277842 133558404360787903168869516536280931557107488047811301767090944,54745234941096457415294245370001308972451724232455240696557887565208148810995582605398 %N A277842 Number of finite automata with n states, n input symbols and one four output symbols. %H A277842 Scott Burns, Marko Riedel, Markus Scheuer, <a href="http://math.stackexchange.com/questions/1968594/">Number of functions</a>, Math StackExchange. %H A277842 Scott Burns, Marko Riedel, Markus Scheuer, <a href="http://math.stackexchange.com/questions/1993637/">Enumeration of finite automata</a>, Math StackExchange. %H A277842 F. Harary and E. Palmer, <a href="http://dx.doi.org/10.1016/S0019-9958(67)91186-2">Enumeration of finite automata</a>, Information and Control, 10 (1967), 499-508. %H A277842 Marko Riedel, <a href="/A277839/a277839.maple.txt">Maple code for A277839-A277844.</a> %Y A277842 Cf. A277839, A277840, A277841, A277843, A277844. %K A277842 nonn %O A277842 1,2 %A A277842 _Marko Riedel_, Nov 01 2016