The number of descents over all functions f:{1,2,...,n}->{1,2,...,n}.
A226998
The number of descents over all functions f:{1,2,...,n}->{1,2,...,n}.
Terms
- a(0) =0a(1) =1a(2) =18a(3) =288a(4) =5000a(5) =97200a(6) =2117682a(7) =51380224a(8) =1377495072a(9) =40500000000
External references
- oeis: A226998