Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 8.

A238919

Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 8.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =232a(10) =1452a(11) =6494a(12) =25286a(13) =90304a(14) =307450a(15) =1014007a(16) =3287295a(17) =10616111a(18) =34460913a(19) =112044376a(20) =364112828a(21) =1180542604a(22) =3814897196a(23) =12278519104a(24) =39353932208a(25) =125637022720a(26) =399749617604

External references