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A152342
Number of permutations of floor(i*7/6), i=0..n-1, with all sums of 4 adjacent terms unique.
0
1, 2, 6, 24, 120, 608, 3840, 25248, 196220, 1615028, 14859898, 145410452, 1615257302, 18902138116, 234645759088, 3068072303286
OFFSET
1,2
CROSSREFS
Sequence in context: A152332 A152349 A152345 * A147735 A147734 A147733
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2008
STATUS
approved