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A152332
Number of permutations of 0..n-1 with all sums of 4 adjacent terms unique.
0
1, 2, 6, 24, 120, 608, 3684, 23136, 174536, 1409200, 12672984, 123070048, 1287015142, 14387894342, 172259484314, 2186934015808
OFFSET
1,2
CROSSREFS
Sequence in context: A070946 A267385 A060726 * A152349 A152345 A152342
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2008
STATUS
approved