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A147949
Number of permutations of floor(i*8/7), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
0
1, 2, 6, 16, 54, 232, 936, 5070, 25700, 139976, 795314, 4513652, 26295578, 160997802, 1236858656, 9227571868
OFFSET
1,2
CROSSREFS
Sequence in context: A147907 A147634 A147899 * A147940 A147931 A091217
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved