Number of endofunctions f on [n] such that f^n(i) = f(i) for all i in [n].
A245507
Number of endofunctions f on [n] such that f^n(i) = f(i) for all i in [n].
Terms
- a(0) =1a(1) =1a(2) =3a(3) =19a(4) =73a(5) =901a(6) =1921a(7) =112015a(8) =87473a(9) =14154409a(10) =69703201a(11) =2929242031a(12) =679876297a(14) =107695177409
External references
- oeis: A245507