Number of permutations of [n] whose cycle lengths are Fibonacci numbers.
A273001
Number of permutations of [n] whose cycle lengths are Fibonacci numbers.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =18a(5) =90a(6) =420a(7) =2220a(8) =19020a(9) =130860a(10) =1096920a(11) =9862920a(12) =83843640a(13) =1411202520a(14) =16144792560a(15) =203091829200
External references
- oeis: A273001