A152344 Number of permutations of floor(i*8/5), i=0..n-1, with all sums of 4 adjacent terms unique.

1, 2, 6, 24, 120, 672, 4188, 28848, 234528, 2079828, 20606690, 211939474, 2381039898, 28964770548, 377119012016, 5313570528018

Offset

1,2

Links

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

Crossrefs

Sequence in context: A372545 A189841 A189256 * A152340 A152347 A228393

Adjacent sequences: A152341 A152342 A152343 * A152345 A152346 A152347

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved