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A147895
Number of permutations of floor(i*7/4), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
0
1, 2, 6, 24, 96, 456, 2134, 12418, 81178, 625138, 4275412, 32681806, 305356674, 3193552544, 29875677830, 301075498104
OFFSET
1,2
CROSSREFS
Sequence in context: A147890 A147912 A147903 * A070945 A152320 A267384
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved