A152709 Number of permutations of floor(i*9/4), i=0..n-1, with all sums of 8 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3450240, 35472960, 395547264, 4852239744, 62627145792, 863717983936, 12684400590400

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152708 A152695 A152703 * A152706 A152701 A152697

Adjacent sequences: A152706 A152707 A152708 * A152710 A152711 A152712

Keyword

nonn

Author

R. H. Hardin, Dec 11 2008

Status

approved