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A152647 Number of permutations of floor(i*9/8), i=0..n-1, with all sums of 7 adjacent terms unique. 0
1, 2, 6, 24, 120, 720, 5040, 40320, 333120, 2999520, 29019168, 304642176, 3429800416, 42313568736, 541641897320, 7507122835968 (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: A179367 A267388 A152628 * A152642 A152639 A152634

Adjacent sequences:  A152644 A152645 A152646 * A152648 A152649 A152650

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 10 2008

STATUS

approved

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Last modified September 26 07:41 EDT 2021. Contains 347664 sequences. (Running on oeis4.)