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Number of odd cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506.
1

%I #7 Jan 11 2024 09:19:17

%S 1,1,4,9,24,62,162,447,1234

%N Number of odd cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506.

%F a(n) = A081148(2n+1).

%Y Cf. A014137, A014138, A057505, A057506, A081148.

%K nonn,more

%O 0,3

%A _Wouter Meeussen_ and _Antti Karttunen_, Mar 10 2003