A152316 Number of permutations of floor(i*4/3), i=0..n-1, with all sums of 3 adjacent terms unique.

1, 2, 6, 24, 104, 500, 3024, 21576, 159056, 1345478, 12486786, 122015150, 1312856218, 15021496980, 181016818160, 2389582439238

Offset

1,2

Links

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

Crossrefs

Sequence in context: A384219 A376585 A128652 * A177520 A152326 A152330

Adjacent sequences: A152313 A152314 A152315 * A152317 A152318 A152319

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved