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A081159
Number of even cycles in range [
A014137
(2n)..
A014138
(2n)] of permutation
A057505
/
A057506
, with no fixed points of either
A057163
or
A057164
.
2
0, 0, 2, 20, 148, 986, 5918, 34708, 202664
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..8.
FORMULA
a(n) =
A081157
(2n+1).
CROSSREFS
Cf.
A081157
,
A014137
,
A014138
,
A057505
,
A057506
,
A057163
,
A057164
.
Sequence in context:
A198052
A203216
A198647
*
A105489
A093302
A248337
Adjacent sequences:
A081156
A081157
A081158
*
A081160
A081161
A081162
KEYWORD
nonn
,
more
AUTHOR
Wouter Meeussen
and
Antti Karttunen
, Mar 10 2003
STATUS
approved
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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)