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 A176142 #2 Mar 31 2012 10:23:58 %S A176142 0,0,0,2,5,58,428,5539,101082,9269715 %N A176142 Number of nonequivalent monoids of order n in which the action of the unit group on the maximal ideal is nontrivial. %C A176142 Monoids are considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the operator). %C A176142 The invertible elements form the unit group of the monoid, all remaining elements form the maximal ideal. %H A176142 A. Distler and T. W. Kelsey, <a href="http://www.springerlink.com/content/ln41r0602m036u27/">The Monoids of Orders Eight, Nine & Ten</a>, Annals of Mathematics and Artificial Intelligence, 56 (2009), 3-25. %Y A176142 Cf. A058133, A151823 %K A176142 hard,nonn %O A176142 1,4 %A A176142 _Andreas Distler_, Apr 10 2010