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A147916 Number of permutations of floor(i*9/8), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 232, 936, 3880, 23002, 127008, 720116, 4318818, 26024362, 158973744, 1022131470, 6808137758 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

CROSSREFS

Sequence in context: A147728 A147727 A147726 * A147907 A147634 A147899

Adjacent sequences:  A147913 A147914 A147915 * A147917 A147918 A147919

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified January 18 04:26 EST 2022. Contains 350410 sequences. (Running on oeis4.)