A152341 Number of permutations of floor(i*7/5), i=0..n-1, with all sums of 4 adjacent terms unique.

1, 2, 6, 24, 120, 656, 4080, 27072, 220604, 1882092, 18317858, 187501438, 2071008996, 24972179932, 315181758186, 4341516164432

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152333 A152335 A152339 * A152346 A152336 A152343

Adjacent sequences: A152338 A152339 A152340 * A152342 A152343 A152344

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved