Number of permutations of n elements admitting a cube root.
A103619
Number of permutations of n elements admitting a cube root.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =16a(5) =80a(6) =400a(7) =2800a(8) =22400a(9) =181440a(10) =1814400a(11) =19958400a(12) =218803200a(13) =2844441600a(14) =39822182400a(15) =556972416000
External references
- oeis: A103619