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A147896 Number of permutations of floor(i*7/6), i=0..n-1, with all sums of two and three adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 232, 1194, 5850, 32514, 186512, 1126380, 7192530, 59572866, 496249216, 4342242234, 38902467388 (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: A147922 A147913 A147904 * A147888 A147945 A147936

Adjacent sequences:  A147893 A147894 A147895 * A147897 A147898 A147899

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified December 1 22:12 EST 2021. Contains 349435 sequences. (Running on oeis4.)