Number of even cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506, with two fixed-points of A057164.
A081160
Number of even cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506, with two fixed-points of A057164.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =3a(5) =4a(6) =10a(7) =16a(8) =35a(9) =60a(10) =126a(11) =225a(12) =462a(13) =848a(14) =1716a(15) =3188a(16) =6435a(17) =12095a(18) =24310
External references
- oeis: A081160