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A152516
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1/21 of the number of permutations of 6 indistinguishable copies of 1..n with exactly 5 local maxima.
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1
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0, 5, 285365, 3328373375, 23122804891093, 132106319858700205, 697701196338306192217, 3568377130807709398000279, 18013809185839252548978200161, 90462608845509339028810174966669, 453352973288072573009512458761236141, 2270154484704085339079608424120307696559
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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) \\ PeaksBySig defined in A334774.
a(n) = {PeaksBySig(vector(n, i, 6), [4])[1]/21} \\ Andrew Howroyd, May 12 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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