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A159735 Number of permutations of 5 indistinguishable copies of 1..n arranged in a circle with exactly 3 local maxima. 1
0, 120, 104160, 43965760, 14780546400, 4552085003160, 1344988823772440, 387866444580875520, 109997436597621865920, 30801926079814805641600, 8538476664330640027144320, 2347317237607372501196513280, 640818430658412951758052362240, 173908317523621059703082725693440 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
PROG
(PARI) \\ CircPeaksBySig defined in A334778.
a(n) = {CircPeaksBySig(vector(n, i, 5), [3])[1]} \\ Andrew Howroyd, May 14 2020
CROSSREFS
Sequence in context: A107446 A184887 A279579 * A157879 A008978 A077692
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 20 2009
EXTENSIONS
Terms a(7) and beyond from Andrew Howroyd, May 14 2020
STATUS
approved

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Last modified May 23 07:28 EDT 2024. Contains 372760 sequences. (Running on oeis4.)