Number of permutations in the symmetric group S_n such that the size of their centralizer is even.

A088335

Number of permutations in the symmetric group S_n such that the size of their centralizer is even.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =4a(4) =16a(5) =96a(6) =576a(7) =4320a(8) =31872a(9) =298368a(10) =3052800a(11) =34387200a(12) =404029440a(13) =5339473920a(14) =75893207040

External references