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 A277839 #13 Nov 05 2016 08:40:11 %S A277839 1,7,638,7643021,20762461502595,19903050866658120066632, %T A277839 10114722264843500593900485682759058, %U A277839 3861169308385212945415179151162048048461447621051,1493197448612892660867776325903488655508569676879420405667824079327 %N A277839 Number of finite automata with n states, n input symbols and one output symbol. %H A277839 Scott Burns, Marko Riedel, Markus Scheuer, <a href="http://math.stackexchange.com/questions/1968594/">Number of functions</a> %H A277839 Scott Burns, Marko Riedel, Markus Scheuer, <a href="http://math.stackexchange.com/questions/1993637/">Enumeration of finite automata</a> %H A277839 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 A277839 Marko Riedel, <a href="/A277839/a277839.maple.txt">Maple code for A277839-A277844.</a> %Y A277839 Cf. A277840, A277841, A277842, A277843, A277844. %K A277839 nonn %O A277839 1,2 %A A277839 _Marko Riedel_, Nov 01 2016