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A081156
Number of odd cycles in range [
A014137
(2n)..
A014138
(2n)] of permutation
A057505
/
A057506
, with fixed-points of both
A057163
and
A057164
.
2
1, 1, 2, 3, 6, 12, 20, 59, 120
(
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OFFSET
0,3
COMMENTS
See comment at
A080973
.
LINKS
Table of n, a(n) for n=0..8.
FORMULA
a(n) =
A081155
(2n+1) =
A000108
(n) - 2*
A081163
(n).
CROSSREFS
Cf.
A080973
.
Cf.
A081155
,
A000108
,
A081163
.
Cf.
A014137
,
A014138
,
A057505
,
A057506
,
A057163
,
A057164
.
Sequence in context:
A079708
A096571
A227940
*
A326172
A082877
A047090
Adjacent sequences:
A081153
A081154
A081155
*
A081157
A081158
A081159
KEYWORD
nonn
,
more
AUTHOR
Wouter Meeussen
&
Antti Karttunen
Mar 10 2003
STATUS
approved
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Last modified April 19 02:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)