A152319 Number of permutations of floor(i*5/4), i=0..n-1, with all sums of 3 adjacent terms unique.

1, 2, 6, 24, 104, 572, 3188, 22208, 160964, 1324778, 11574266, 112170676, 1184117424, 13447507146, 159753416748, 2023662431552

Offset

1,2

Links

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

Crossrefs

Sequence in context: A177520 A152326 A152330 * A152315 A152317 A152321

Adjacent sequences: A152316 A152317 A152318 * A152320 A152321 A152322

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved