Number of endofunctions on [n] whose cycle lengths are multiples of 7.

A246614

Number of endofunctions on [n] whose cycle lengths are multiples of 7.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =720a(8) =40320a(9) =1632960a(10) =60480000a(11) =2213719200a(12) =82771476480

External references