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A147914 Number of permutations of floor(i*8/5), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 16, 74, 384, 1970, 10282, 65472, 391386, 2939090, 20208896, 147099900, 1225118562, 9901118700, 97592995386 (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: A147901 A147894 A147885 * A147905 A147897 A147889

Adjacent sequences:  A147911 A147912 A147913 * A147915 A147916 A147917

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified December 1 16:23 EST 2021. Contains 349430 sequences. (Running on oeis4.)