login
A147951
Number of permutations of floor(i*9/7), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
0
1, 2, 6, 16, 74, 304, 1424, 7946, 39908, 223514, 1294348, 8736910, 58707788, 401926462, 3287231046, 25868828516
OFFSET
1,2
CROSSREFS
Sequence in context: A147910 A147902 A147893 * A147942 A147933 A147886
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2008
STATUS
approved