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A081154
Number of odd cycles in range [
A014137
(2n)..
A014138
(2n)] of permutation
A057505
/
A057506
, with no fixed points of either
A057163
or
A057164
.
1
0, 0, 2, 6, 18, 50, 142, 388, 1114
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..8.
FORMULA
a(n) =
A081153
(2n+1).
CROSSREFS
Cf.
A081153
,
A014137
,
A014138
,
A057505
,
A057506
,
A057163
,
A057164
.
Sequence in context:
A372481
A361286
A180282
*
A002900
A309087
A199770
Adjacent sequences:
A081151
A081152
A081153
*
A081155
A081156
A081157
KEYWORD
nonn
,
more
AUTHOR
Wouter Meeussen
and
Antti Karttunen
, Mar 10 2003
STATUS
approved
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Last modified August 30 05:37 EDT 2024. Contains 375526 sequences. (Running on oeis4.)