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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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A072854 A147944 A147935 * A147948 A147939 A147930
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved

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Last modified March 29 06:15 EDT 2024. Contains 371265 sequences. (Running on oeis4.)