Number of fixed points in range [A014137(n-1)..A014138(n-1)] of permutations A130919/A130920.
A130968
Number of fixed points in range [A014137(n-1)..A014138(n-1)] of permutations A130919/A130920.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =7a(5) =10a(6) =25a(7) =54a(8) =131a(9) =331a(10) =864a(11) =2292a(12) =6169a(13) =16835
External references
- oeis: A130968