Number of idempotents in partial Brauer monoid PB_n.
A256032
Number of idempotents in partial Brauer monoid PB_n.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =38a(4) =241a(5) =1922a(6) =17359a(7) =180854a(8) =2092801a(9) =26851202a(10) =376371799
External references
- oeis: A256032