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Monoids of order n with 3 idempotents, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the operator).
1

%I #5 Mar 30 2012 17:37:11

%S 2,10,47,283,2139

%N Monoids of order n with 3 idempotents, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the operator).

%H <a href="/index/Mo#monoids">Index entries for sequences related to monoids</a>

%Y Column 3 of A058147.

%K nonn,more

%O 3,1

%A _Christian G. Bower_, Nov 14 2000