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A151608 Number of permutations of 6 indistinguishable copies of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order. +0
1
0, 400, 78900, 4232384, 164553580, 5706469776 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A038483 A006764 A108034 this_sequence A022232 A151652 A013767

Adjacent sequences: A151605 A151606 A151607 this_sequence A151609 A151610 A151611

KEYWORD

nonn

AUTHOR

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

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

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