Commuting even permutations: number of ordered pairs g, h in the alternating group A_n such that gh = hg.
A073584
Commuting even permutations: number of ordered pairs g, h in the alternating group A_n such that gh = hg.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =48a(4) =300a(5) =2520a(6) =22680a(7) =282240a(8) =3265920a(9) =43545600a(10) =618710400a(11) =10298534400a(12) =171243072000
External references
- oeis: A073584