Number of minimal idempotent generating sets for the singular part P_n \ S_n of the partition monoid P_n.
A244491
Number of minimal idempotent generating sets for the singular part P_n \ S_n of the partition monoid P_n.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =20a(4) =201a(5) =2604a(6) =40915a(7) =754368a(8) =15960945a(9) =381141008a(10) =10139372451a(11) =297356237760
External references
- oeis: A244491