Number of permutations on n points admitting a sixth root.
A215717
Number of permutations on n points admitting a sixth root.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =40a(6) =190a(7) =1330a(8) =8680a(9) =52920a(10) =340200a(11) =6237000a(12) =76211520a(13) =1098857760a(14) =11677585920a(15) =109679169600
External references
- oeis: A215717