A058150 Triangle: Number of asymmetric commutative monoids of order n with k idempotents.
1, 1, 1, 0, 3, 1, 0, 6, 6, 1, 0, 10, 24, 13, 2, 0, 32, 87, 87, 36, 5, 0, 157, 350, 486, 347, 128, 18, 0
Offset: 1
Examples
1; 1,1; 0,3,1; 0,6,6,1; 0,10,24,13,2; ...
Crossrefs
Row sums give A058134.