A152317 Number of permutations of floor(i*5/2), i=0..n-1, with all sums of 3 adjacent terms unique.

1, 2, 6, 24, 104, 572, 3688, 27200, 208108, 1782304, 17035000, 176048408, 1966114726, 23376757520, 302105991330, 4109445417380

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152330 A152319 A152315 * A152321 A152323 A337770

Adjacent sequences: A152314 A152315 A152316 * A152318 A152319 A152320

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved