|
%I #6 Mar 30 2012 17:37:11
%S 1,2,1,3,9,3,11,37,52,12,112,224,434,383,68,4398,1984,3976,5568,3256,
%T 502,1181185,47622,44581,74851,74604,31881,4158
%N Triangle: Number of asymmetric semigroups of order n with k idempotents.
%H <a href="/index/Se#semigroups">Index entries for sequences related to semigroups</a>
%e 1; 2,1; 3,9,3; 11,37,52,12; 112,224,434,383,68; ...
%Y Row sums give A058104. Main diagonal: A058115. Column 1: A058114.
%K nonn,tabl,hard
%O 1,2
%A _Christian G. Bower_, Nov 09 2000
%E Updated Feb 19 2001
|
