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A147935
Number of permutations of floor(i*5/3), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
0
1, 2, 6, 24, 96, 376, 2062, 12092, 63082, 435476, 3164992, 22053858, 185988918, 1662793672, 13930931162, 141475507468
OFFSET
1,2
CROSSREFS
Sequence in context: A292984 A072854 A147944 * A147926 A147948 A147939
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved