A152512 1/6 of the number of permutations of 5 indistinguishable copies of 1..n with exactly 5 local maxima.
0, 1, 51408, 331072352, 1080698915350, 2691500727775616, 5953257961411738328, 12474940206857421730672, 25498614004537897031551640, 51527434528518884637847012176, 103587934174554666918594336695328, 207763415020909344351469183584249792
Offset: 1
Keywords
Links
- Andrew Howroyd, Table of n, a(n) for n = 1..200
Programs
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PARI
\\ PeaksBySig defined in A334774. a(n) = {PeaksBySig(vector(n,i,5), [4])[1]/6} \\ Andrew Howroyd, May 12 2020
Extensions
Terms a(7) and beyond from Andrew Howroyd, May 12 2020