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A147908 Number of permutations of floor(i*3/2), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 16, 74, 368, 1776, 9208, 53466, 314212, 2033052, 13601690, 101992918, 775253990, 6502888210, 55177455836 (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: A147933 A147886 A147924 * A147900 A147892 A147909

Adjacent sequences:  A147905 A147906 A147907 * A147909 A147910 A147911

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified November 28 13:47 EST 2021. Contains 349413 sequences. (Running on oeis4.)