Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 10.

A238921

Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 10.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =2620a(12) =18228a(13) =91600a(14) =400300a(15) =1604246a(16) =6098862a(17) =22340672a(18) =79928946a(19) =281441131a(20) =981869555a(21) =3421660163a(22) =11978105085a(23) =42029994744a(24) =147596654412a(25) =518045934492

External references