Denominator of the sum of inverse products of cycle sizes in all permutations of [n].
A323291
Denominator of the sum of inverse products of cycle sizes in all permutations of [n].
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =12a(5) =20a(6) =360a(7) =2520a(8) =1680a(9) =15120a(10) =151200a(11) =554400a(12) =9979200a(13) =129729600a(14) =605404800a(15) =27243216000a(16) =54486432000a(17) =308756448000
External references
- oeis: A323291