Number of endofunctions on [n] whose cycle lengths are multiples of 9.

A246616

Number of endofunctions on [n] whose cycle lengths are multiples of 9.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =40320a(10) =3628800a(11) =219542400a(12) =11496038400a(13) =570031862400

External references