Cardinalities of the sub-operad FF_6 of the operad MFF.
A231690
Cardinalities of the sub-operad FF_6 of the operad MFF.
Terms
- a(0) =1a(1) =6a(2) =56a(3) =640a(4) =8158a(5) =111258a(6) =1588544a(7) =23446248a(8) =354855218a(9) =5477342222a(10) =85893429256
External references
- oeis: A231690