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A081148 Number of odd cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506. +0
7
1, 1, 0, 1, 0, 4, 0, 9, 0, 24, 0, 62, 0, 162, 0, 447, 0, 1234, 0 (list; graph; listen)
OFFSET

0,6

COMMENT

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

LINKS

Antti Karttunen, Counted with the help of this C-program

CROSSREFS

a(n) = A081153(n)+A081155(n) = A057507(n)-A081150(n). Bisection: A081149.

Sequence in context: A019249 A013440 A013496 this_sequence A138478 A133844 A016683

Adjacent sequences: A081145 A081146 A081147 this_sequence A081149 A081150 A081151

KEYWORD

nonn

AUTHOR

Wouter Meeussen (wouter.meeussen(AT)pandora.be) & Antti Karttunen (Firstname.Surname(AT)iki.fi) Mar 10 2003

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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