Number of irreducible idempotents in partial Brauer monoid PB_n.
A256031
Number of irreducible idempotents in partial Brauer monoid PB_n.
Terms
- a(0) =2a(1) =3a(2) =12a(3) =30a(4) =240a(5) =840a(6) =10080a(7) =45360a(8) =725760a(9) =3991680a(10) =79833600a(11) =518918400a(12) =12454041600a(13) =93405312000
External references
- oeis: A256031