Number of endofunctions on [n] whose cycle lengths are squares.

A273997

Number of endofunctions on [n] whose cycle lengths are squares.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =16a(4) =131a(5) =1446a(6) =19957a(7) =329344a(8) =6315129a(9) =137942380a(10) =3382214291a(11) =92014156224

External references