A152634 Number of permutations of floor(i*6/5), i=0..n-1, with all sums of 7 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 336000, 3023712, 29759040, 314642496, 3608470880, 43346020032, 570442056608, 8160756625776

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152647 A152642 A152639 * A152633 A152646 A152630

Adjacent sequences: A152631 A152632 A152633 * A152635 A152636 A152637

Keyword

nonn

Author

R. H. Hardin, Dec 10 2008

Status

approved