Number of permutations of [n] with decreasing cycle sizes.
A286073
Number of permutations of [n] with decreasing cycle sizes.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =12a(5) =60a(6) =340a(7) =2280a(8) =17220a(9) =151872a(10) =1459584a(11) =15624000a(12) =182318400a(13) =2316837600a(14) =31596570720a(15) =465582237120
External references
- oeis: A286073