Number of functions f:{1,2,...,n}->{1,2,...,n} with odd cycles only.
A116956
Number of functions f:{1,2,...,n}->{1,2,...,n} with odd cycles only.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =18a(4) =157a(5) =1800a(6) =25551a(7) =432376a(8) =8494809a(9) =190029888a(10) =4768313275a(11) =132626098176
External references
- oeis: A116956