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A151580 Number of permutations of 1..n arranged in a circle with exactly 7 adjacent element pairs in decreasing order. +0
1
0, 8, 2223, 146080, 5007112, 116857368, 2112659718, 31852408056, 419567641380 (list; graph; listen)
OFFSET

7,2

CROSSREFS

Sequence in context: A001375 A017415 A046246 this_sequence A017547 A046248 A078525

Adjacent sequences: A151577 A151578 A151579 this_sequence A151581 A151582 A151583

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) May 21 2009

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.


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