A152315 Number of permutations of floor(i*3/2), i=0..n-1, with all sums of 3 adjacent terms unique.

1, 2, 6, 24, 104, 572, 3492, 24928, 186268, 1551206, 14416404, 144402356, 1573180836, 18144932858, 228261500556, 3006275636210

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152326 A152330 A152319 * A152317 A152321 A152323

Adjacent sequences: A152312 A152313 A152314 * A152316 A152317 A152318

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved