A152640 Number of permutations of floor(i*8/3), i=0..n-1, with all sums of 7 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 342720, 3212640, 32935104, 363198208, 4386176768, 57533937696, 797758720672, 11916641969996

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152638 A152636 A152632 * A152641 A152644 A152637

Adjacent sequences: A152637 A152638 A152639 * A152641 A152642 A152643

Keyword

nonn

Author

R. H. Hardin, Dec 10 2008

Status

approved