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A152637 Number of permutations of floor(i*7/4), i=0..n-1, with all sums of 7 adjacent terms unique. +0
1
1, 2, 6, 24, 120, 720, 5040, 40320, 343680, 3222432, 32454144, 355035200, 4246001216, 53718115024, 739420640352, 10777107944060 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A152640 A152641 A152644 this_sequence A152645 A054873 A072132

Adjacent sequences: A152634 A152635 A152636 this_sequence A152638 A152639 A152640

KEYWORD

nonn

AUTHOR

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

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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