A058152 Triangle: Number of asymmetric monoids of order n with k idempotents, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the operator).

1, 1, 1, 0, 3, 1, 0, 6, 8, 2, 0, 13, 36, 35, 7, 0, 93, 186, 297, 220, 37, 0, 2593, 1396, 2559, 3214, 1746, 263, 0

Offset

1,5

Links

Table of n, a(n) for n=1..29.

Index entries for sequences related to monoids

Example

1; 1,1; 0,3,1; 0,6,8,2; 0,13,36,35,7; ...

Crossrefs

Row sums give A058136.

Sequence in context: A257673 A137651 A248826 * A058140 A074678 A363976

Adjacent sequences: A058149 A058150 A058151 * A058153 A058154 A058155

Keyword

nonn,tabl,more

Author

Christian G. Bower, Nov 14 2000

Status

approved