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Search: id:A152387
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A152387 Number of permutations of floor(i*9/8), i=0..n-1, with all sums of 6 adjacent terms unique. +0
1
1, 2, 6, 24, 120, 720, 5040, 36096, 290976, 2536032, 24291184, 246261152, 2795379016, 33393132076, 430378548546, 5852810700688 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A045977 A154655 A152369 this_sequence A152383 A152380 A152374

Adjacent sequences: A152384 A152385 A152386 this_sequence A152388 A152389 A152390

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Dec 02 2008

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


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