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%I #6 Mar 30 2012 17:37:11
%S 1,1,3,9,44,271,2246,33672
%N Number of self-converse asymmetric semigroups of order n.
%H <a href="/index/Se#semigroups">Index entries for sequences related to semigroups</a>
%Y Cf. A029851.
%K nonn,hard
%O 0,3
%A _Christian G. Bower_, Nov 09 2000
%E Updated Feb 19 2001
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