A081167 Number of cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506.

1, 2, 10, 46, 236, 1288, 6984, 38528, 216648, 1240818

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Formula

a(n) = A057507(2n+1).

Crossrefs

Cf. A057507, A081151, A014137, A014138, A057505, A057506.

Sequence in context: A191644 A009640 A191684 * A321274 A166107 A034429

Adjacent sequences: A081164 A081165 A081166 * A081168 A081169 A081170

Keyword

nonn,more

Author

Wouter Meeussen and Antti Karttunen, Mar 10 2003

Status

approved