Total number of nonrecurrent elements in all functions f:{1,2,...,n}->{1,2,...,n}.
A219706
Total number of nonrecurrent elements in all functions f:{1,2,...,n}->{1,2,...,n}.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =30a(4) =456a(5) =7780a(6) =150480a(7) =3279234a(8) =79775360a(9) =2146962024a(10) =63397843200
External references
- oeis: A219706