A152629 Number of permutations of floor(i*3/2), i=0..n-1, with all sums of 7 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 339840, 3127680, 31252896, 338008224, 3956752544, 50272802560, 674010518704, 9686853876720

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152633 A152646 A152630 * A152631 A152635 A152643

Adjacent sequences: A152626 A152627 A152628 * A152630 A152631 A152632

Keyword

nonn

Author

R. H. Hardin, Dec 10 2008

Status

approved