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A147887
Number of permutations of floor(i*7/4), i=0..n-1, with all sums of two adjacent terms unique.
0
1, 2, 6, 24, 96, 528, 2418, 14676, 109882, 996240, 7675118, 67181516, 718155492, 8798220008, 93512144280, 1080953807952
OFFSET
1,2
CROSSREFS
Sequence in context: A152314 A152331 A152324 * A053502 A053504 A215716
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved