Number of permutations of {1,2,...,3n} whose cycle lengths are all divisible by 3.
A178575
Number of permutations of {1,2,...,3n} whose cycle lengths are all divisible by 3.
Terms
- a(0) =1a(1) =2a(2) =160a(3) =62720a(4) =68992000a(5) =163235072000
External references
- oeis: A178575