Number of endofunctions of [n] with a cycle a->b->c->a and for all x in [n], some iterate f^k(x)=a.

A065513

Number of endofunctions of [n] with a cycle a->b->c->a and for all x in [n], some iterate f^k(x)=a.

Terms

    a(0) =2a(1) =24a(2) =300a(3) =4320a(4) =72030a(5) =1376256a(6) =29760696a(7) =720000000a(8) =19292299290a(9) =567575838720

External references