Number of permutations of the prime indices of n! with at least one non-singleton run.
A335459
Number of permutations of the prime indices of n! with at least one non-singleton run.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =18a(6) =102a(7) =786a(8) =3960a(9) =51450a(10) =675570a(11) =10804710a(12) =139674024a(13) =2793377664a(14) =58662908640
External references
- oeis: A335459