A152339 Number of permutations of floor(i*7/3), i=0..n-1, with all sums of 4 adjacent terms unique.

1, 2, 6, 24, 120, 640, 4248, 30912, 252656, 2303948, 22199818, 239420346, 2870638260, 35209136462, 475497621586, 6955191572674

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152334 A152333 A152335 * A152341 A152346 A152336

Adjacent sequences: A152336 A152337 A152338 * A152340 A152341 A152342

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved