Product of the lengths of the cycle types of the permutation created by duality and reversal on the partitions of n.
A036046
Product of the lengths of the cycle types of the permutation created by duality and reversal on the partitions of n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =6a(8) =16a(9) =14a(10) =34a(11) =48a(12) =8448a(13) =4020a(14) =9180a(15) =6272a(16) =125424a(17) =846000a(18) =119448a(19) =24501600a(20) =188089566720a(21) =2828352384a(22) =132167533680
External references
- oeis: A036046