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A152345
Number of permutations of floor(i*8/7), i=0..n-1, with all sums of 4 adjacent terms unique.
0
1, 2, 6, 24, 120, 608, 3684, 26640, 192228, 1659048, 14739946, 146975590, 1544407392, 17545685816, 223201723716, 2939542170692
OFFSET
1,2
CROSSREFS
Sequence in context: A060726 A152332 A152349 * A152342 A147735 A147734
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2008
STATUS
approved