A057507 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506.

1, 1, 1, 2, 3, 10, 18, 46, 95, 236, 528, 1288, 2936, 6984, 16212, 38528, 90717, 216648, 516358, 1240818, 2979992

Offset

0,4

Comments

For the convenience of the range notation above, we define A014137(-1) and A014138(-1) as zero.

Links

Table of n, a(n) for n=0..20.

A. Karttunen, C-program for computing the initial terms of this sequence

Crossrefs

a(n) = A081148(n)+A081150(n). Bisections: A081151, A081167. Cf. A057545, A060114, A081164.

Occurs for first time in A073201 as row 2614.

Sequence in context: A070253 A147673 A298345 * A233895 A163467 A143045

Adjacent sequences: A057504 A057505 A057506 * A057508 A057509 A057510

Keyword

nonn,more

Author

Antti Karttunen, Sep 03 2000

Status

approved