A152343 Number of permutations of floor(i*8/3), i=0..n-1, with all sums of 4 adjacent terms unique.

1, 2, 6, 24, 120, 656, 4248, 29616, 252936, 2316332, 23003668, 243494736, 2910398870, 37080846860, 486680125374, 7111278632124

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152341 A152346 A152336 * A177529 A138619 A372545

Adjacent sequences: A152340 A152341 A152342 * A152344 A152345 A152346

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved