Number of entries in the second cycles of all permutations of [n] when cycles are ordered by decreasing lengths.
A332851
Number of entries in the second cycles of all permutations of [n] when cycles are ordered by decreasing lengths.
Terms
- a(0) =1a(1) =4a(2) =21a(3) =131a(4) =950a(5) =7694a(6) =70343a(7) =709015a(8) =7867174a(9) =94945874a(10) =1241471451a(11) =17442660795a(12) =262748183438
External references
- oeis: A332851