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A147892 Number of permutations of floor(i*3/2), i=0..n-1, with all sums of two and three adjacent terms respectively unique. 0
1, 2, 6, 16, 74, 368, 1776, 9624, 57916, 365502, 2682244, 20315800, 175739338, 1565766116, 15452316746, 156617881640 (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: A147924 A147908 A147900 * A147909 A147911 A147901

Adjacent sequences:  A147889 A147890 A147891 * A147893 A147894 A147895

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified January 19 22:12 EST 2022. Contains 350466 sequences. (Running on oeis4.)