A152387 Number of permutations of floor(i*9/8), i=0..n-1, with all sums of 6 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 36096, 290976, 2536032, 24291184, 246261152, 2795379016, 33393132076, 430378548546, 5852810700688

Offset

1,2

Links

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

Crossrefs

Sequence in context: A179366 A267387 A152369 * A152383 A228400 A152380

Adjacent sequences: A152384 A152385 A152386 * A152388 A152389 A152390

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved