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A147926
Number of permutations of floor(i*5/3), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
0
1, 2, 6, 24, 96, 376, 2062, 12860, 69210, 499610, 3976470, 29600486, 270810736, 2683748296, 24357907464, 272243917696
OFFSET
1,2
CROSSREFS
Sequence in context: A072854 A147944 A147935 * A147948 A147939 A147930
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved