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A152322
Number of permutations of floor(i*7/4), i=0..n-1, with all sums of 3 adjacent terms unique.
0
1, 2, 6, 24, 112, 552, 3712, 27192, 214364, 1821054, 17062880, 174404598, 1971151548, 23606317248, 300614239004, 4085161670066
OFFSET
1,2
CROSSREFS
Sequence in context: A174195 A274378 A177521 * A308726 A168490 A118376
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2008
STATUS
approved