%I A058129
%S A058129 1,2,7,35,228,2237,31559,1668997
%N A058129 Number of monoids (semigroups with identity) of order n.
%H A058129 Eric Postpischil <a href="http://groups.google.com/groups?&hl=en&lr=&ie=UTF-8&selm=11802%40shlump.nac.dec.com\
               &rnum=2">Posting to sci.math newsgroup, May 21 1990</a>
%H A058129 <a href="Sindx_Mo.html#monoids">Index entries for sequences related to 
               monoids</a>
%Y A058129 a(n)=A058133(n)*2-A058132(n).
%Y A058129 Sequence in context: A014307 A000154 A003713 this_sequence A101514 A111908 
               A060814
%Y A058129 Adjacent sequences: A058126 A058127 A058128 this_sequence A058130 A058131 
               A058132
%K A058129 nonn,hard
%O A058129 1,2
%A A058129 Christian G. Bower (bowerc(AT)usa.net), Nov 13 2000
%E A058129 a(8) from Christian G. Bower (bowerc(AT)usa.net), Dec 26 2006