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A151602 Number of permutations of 4 indistinguishable copies of 1..n arranged in a circle with exactly 7 adjacent element pairs in decreasing order. 0
0, 264, 19386752, 51689441800, 44408699858208, 22152650667809256 (list; graph; refs; listen; history; internal format)
OFFSET

2,2

CROSSREFS

Sequence in context: A013974 A145639 A116501 * A051976 A146335 A202416

Adjacent sequences:  A151599 A151600 A151601 * A151603 A151604 A151605

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) May 21 2009

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Last modified February 15 05:15 EST 2012. Contains 205694 sequences.