%I A037234
%S A037234 0,1,2,2,11,2,4,2,52,11,4,2,22,2,4,4,390,2,22,2,22,4,4,2,104,11,4,59,22,
               2,8,2
%N A037234 a(0) = 0; for n > 0, a(n) = number of rings with n elements.
%C A037234 This entry is to accommodate those who use the convention that a(0)=0.
%H A037234 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Ring.html">Link to a section of The World of Mathematics.</a>
%Y A037234 A027623 is the main entry for this sequence.
%Y A037234 Sequence in context: A081088 A001038 A027623 this_sequence A141651 A090525 
               A126806
%Y A037234 Adjacent sequences: A037231 A037232 A037233 this_sequence A037235 A037236 
               A037237
%K A037234 nonn,mult
%O A037234 0,3
%A A037234 N. J. A. Sloane (njas(AT)research.att.com).