Revision History for A152508
(Underlined text is an addition;
strikethrough text is a deletion.)
Showing all changes.
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#6 by Susanna Cuyler at Tue May 12 12:55:52 EDT 2020
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#5 by Andrew Howroyd at Tue May 12 12:43:29 EDT 2020
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#4 by Andrew Howroyd at Tue May 12 12:40:40 EDT 2020
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| DATA
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0, 0, 42, 1836695, 10530242387, 29832986150825, 60695128902586540, 103817995457729295887, 161328267155502711433605, 237364194180589518867292325, 338385077937653019716292059598, 473635313924991038119333176290875, 655918703527056982804817522787817607
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| LINKS
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Andrew Howroyd, <a href="/A152508/b152508.txt">Table of n, a(n) for n = 1..200</a>
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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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Cf. A152504, A334774.
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| EXTENSIONS
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Terms a(8) and beyond from Andrew Howroyd, May 12 2020
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| STATUS
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approved
editing
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#3 by Russ Cox at Sat Mar 31 12:35:19 EDT 2012
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| AUTHOR
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_R. H. Hardin (rhhardin(AT)att.net), _, Dec 06 2008
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Discussion
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| Sat Mar 31
| 12:35
| OEIS Server: https://oeis.org/edit/global/875
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#2 by N. J. A. Sloane at Sat Oct 02 03:00:00 EDT 2010
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| KEYWORD
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nonn,new
nonn
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| AUTHOR
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Ron R. H. Hardin (rhhardin(AT)att.net), Dec 06 2008
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#1 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009
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| NAME
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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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| DATA
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0, 0, 42, 1836695, 10530242387, 29832986150825, 60695128902586540
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| OFFSET
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1,3
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| KEYWORD
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nonn
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| AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Dec 06 2008
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| STATUS
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approved
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