A152645 Number of permutations of floor(i*9/5), i=0..n-1, with all sums of 7 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 344640, 3214080, 32654592, 362526336, 4287655360, 54096841216, 740614408736, 10969734238220

Offset

1,2

Links

Table of n, a(n) for n=1..16.

Crossrefs

Sequence in context: A152641 A152644 A152637 * A360386 A054873 A324075

Adjacent sequences: A152642 A152643 A152644 * A152646 A152647 A152648

Keyword

nonn

Author

R. H. Hardin, Dec 10 2008

Status

approved