Size of complete unitary aperiodic semigroup with n states.

A236409

Size of complete unitary aperiodic semigroup with n states.

Terms

    a(0) =3a(1) =10a(2) =45a(3) =270a(4) =1737a(5) =13280a(6) =121500a(7) =1231200a(8) =12994020a(9) =151817274a(10) =2041564500a(11) =29351808000a(12) =448218360000

External references