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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 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
FORMULA
a(n) = A081157(2n+1).
CROSSREFS
Sequence in context: A198052 A203216 A198647 * A105489 A093302 A248337
KEYWORD
nonn,more
AUTHOR
STATUS
approved

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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)