Number of even cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506.
A081152
Number of even cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506.
Terms
- a(0) =0a(1) =1a(2) =6a(3) =37a(4) =212a(5) =1226a(6) =6822a(7) =38081a(8) =215414
External references
- oeis: A081152