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A147930 Number of permutations of floor(i*8/3), i=0..n-1, with all sums of two and three adjacent terms respectively unique. 0
1, 2, 6, 24, 96, 376, 2214, 14504, 76592, 578748, 4897972, 35873520, 341266768, 3588847880, 32029981504, 372805397466 (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: A147926 A147948 A147939 * A147918 A072855 A179341

Adjacent sequences:  A147927 A147928 A147929 * A147931 A147932 A147933

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified June 28 05:40 EDT 2022. Contains 354903 sequences. (Running on oeis4.)