Number of permutations in the symmetric group S_n that have even number of transpositions in their cycle decomposition.
A088336
Number of permutations in the symmetric group S_n that have even number of transpositions in their cycle decomposition.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =18a(5) =90a(6) =480a(7) =3360a(8) =27720a(9) =249480a(10) =2479680a(11) =27276480a(12) =327650400a(13) =4259455200a(14) =59623724160a(15) =894355862400
External references
- oeis: A088336