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

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

Offset

0,3

Links

Table of n, a(n) for n=0..8.

Formula

a(n) = A081150(2n+1) = A081159(n)+A081161(n)+A081163(n).

Crossrefs

Cf. A081151.

Cf. A081150, A081159, A081161, A081163.

Cf. A014137, A014138, A057505, A057506.

Sequence in context: A156185 A057418 A001419 * A244618 A033116 A033124

Adjacent sequences: A081149 A081150 A081151 * A081153 A081154 A081155

Keyword

nonn,more

Author

Wouter Meeussen and Antti Karttunen, Mar 10 2003

Status

approved