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A152338 Number of permutations of floor(i*6/5), i=0..n-1, with all sums of 4 adjacent terms unique. 0
1, 2, 6, 24, 120, 640, 3924, 27552, 197364, 1677640, 16002846, 159888834, 1733332410, 19754032288, 242687959560, 3279596665638 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

CROSSREFS

Sequence in context: A147732 A147731 A152337 * A152348 A152334 A152333

Adjacent sequences:  A152335 A152336 A152337 * A152339 A152340 A152341

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 02 2008

STATUS

approved

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Last modified January 23 16:13 EST 2022. Contains 350514 sequences. (Running on oeis4.)