A058137 Triangle read by rows: monoids of order n with k idempotents.

1, 1, 1, 1, 3, 3, 2, 9, 14, 10, 1, 32, 63, 86, 46, 2, 219, 406, 694, 665, 251, 1, 5585, 3331, 6343, 8582, 6035, 1682, 5

Offset: 1

Author

Christian G. Bower, Nov 14 2000

Keywords

• nonn
• tabl
• more

Examples

			1; 1,1; 1,3,3; 2,9,14,10; 1,32,63,86,46; ...
		

Links

• Index entries for sequences related to monoids

Crossrefs

Row sums give A058129. Main diagonal: A058112(n-1). Columns 1-3: A000001, A058138, A058139.