A152329 Number of permutations of floor(i*9/5), i=0..n-1, with all sums of 3 adjacent terms unique.

1, 2, 6, 24, 112, 624, 3536, 26208, 205940, 1876968, 17768828, 184776220, 2037200054, 24055578898, 309833416942, 4278904822400

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152318 A152328 A152325 * A216716 A192088 A245233

Adjacent sequences: A152326 A152327 A152328 * A152330 A152331 A152332

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved