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A159729
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Number of permutations of 4 indistinguishable copies of 1..n arranged in a circle with exactly 3 local maxima.
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1
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0, 24, 13896, 3347088, 595973360, 93992305032, 14015268159704, 2027725518697376, 287867804621478048, 40320948446041301720, 5589326195307268168392, 768314046269046341078064, 104876358654665681729030736, 14230976452809572524526026408, 1921184312523441298037576065080
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OFFSET
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1,2
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LINKS
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PROG
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(PARI) \\ CircPeaksBySig defined in A334778.
a(n) = {CircPeaksBySig(vector(n, i, 4), [3])[1]} \\ Andrew Howroyd, May 14 2020
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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