A152708 Number of permutations of floor(i*9/2), i=0..n-1, with all sums of 8 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3421440, 35166240, 389352960, 4694073888, 60648751360, 847015485216, 12403530135936

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152694 A152696 A152700 * A152695 A152703 A152709

Adjacent sequences: A152705 A152706 A152707 * A152709 A152710 A152711

Keyword

nonn

Author

R. H. Hardin, Dec 11 2008

Status

approved