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A081152 Number of even cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506. 2

%I

%S 0,1,6,37,212,1226,6822,38081,215414

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

%Y a(n) = A081150(2n+1) = A081159(n)+A081161(n)+A081163(n). Cf. A081151.

%K nonn

%O 0,3

%A _Wouter Meeussen_ & _Antti Karttunen_ Mar 10 2003

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Last modified April 11 05:49 EDT 2021. Contains 342886 sequences. (Running on oeis4.)