A152639 Number of permutations of floor(i*7/6), i=0..n-1, with all sums of 7 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 336000, 3023424, 29230272, 306056224, 3505344736, 43883479616, 569305988568, 7973649338056

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152628 A152647 A152642 * A152634 A152633 A152646

Adjacent sequences: A152636 A152637 A152638 * A152640 A152641 A152642

Keyword

nonn

Author

R. H. Hardin, Dec 10 2008

Status

approved