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A147727 Number of permutations of 1..n with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 232, 936, 3880, 17302, 81584, 409012, 2169742, 11998726, 69653068, 426511054, 2718410098, 18114464012 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

CROSSREFS

Sequence in context: A147730 A147729 A147728 * A147726 A147916 A147907

Adjacent sequences:  A147724 A147725 A147726 * A147728 A147729 A147730

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 11 2008

STATUS

approved

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Last modified December 1 14:02 EST 2021. Contains 349429 sequences. (Running on oeis4.)