login
A152631
Number of permutations of floor(i*5/2), i=0..n-1, with all sums of 7 adjacent terms unique.
0
1, 2, 6, 24, 120, 720, 5040, 40320, 339840, 3151872, 31926528, 352423488, 4218592000, 54510747424, 758539165904, 11240098648736
OFFSET
1,2
CROSSREFS
Sequence in context: A152646 A152630 A152629 * A152635 A152643 A152638
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2008
STATUS
approved