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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
OFFSET
1,2
CROSSREFS
Sequence in context: A147924 A147908 A147900 * A147909 A147911 A147901
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved