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A152645 Number of permutations of floor(i*9/5), i=0..n-1, with all sums of 7 adjacent terms unique. +0
1
1, 2, 6, 24, 120, 720, 5040, 40320, 344640, 3214080, 32654592, 362526336, 4287655360, 54096841216, 740614408736, 10969734238220 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A152641 A152644 A152637 this_sequence A054873 A072132 A066459

Adjacent sequences: A152642 A152643 A152644 this_sequence A152646 A152647 A152648

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Dec 10 2008

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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