Number of permutations of [n] with n-4 sequences.
A001760
Number of permutations of [n] with n-4 sequences.
Terms
- a(0) =2a(1) =60a(2) =836a(3) =9576a(4) =103326a(5) =1106820a(6) =12062152a(7) =135391872a(8) =1575253690a(9) =19058801580a(10) =240134763948
External references
- oeis: A001760