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A147917
Number of permutations of floor(i*4/3), i=0..n-1, with all sums of two adjacent terms unique.
0
1, 2, 6, 24, 74, 368, 2140, 11468, 78848, 636700, 4866484, 43893944, 452631554, 4475626268, 50128776656, 625960035472
OFFSET
1,2
CROSSREFS
Sequence in context: A147943 A147934 A147925 * A147946 A147937 A147928
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved