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A152508
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1/10 of the number of permutations of 4 indistinguishable copies of 1..n with exactly 6 local maxima.
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1
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0, 0, 42, 1836695, 10530242387, 29832986150825, 60695128902586540, 103817995457729295887, 161328267155502711433605, 237364194180589518867292325, 338385077937653019716292059598, 473635313924991038119333176290875, 655918703527056982804817522787817607
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OFFSET
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1,3
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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, 4), [5])[1]/10} \\ 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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