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A151603 Number of permutations of 5 indistinguishable copies of 1..n arranged in a circle with exactly 2 adjacent element pairs in decreasing order. 0
0, 80, 1395, 12560, 96575, 698940 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A126861 A038727 A204476 * A199533 A060623 A173782

Adjacent sequences:  A151600 A151601 A151602 * A151604 A151605 A151606

KEYWORD

nonn

AUTHOR

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

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Last modified February 14 15:39 EST 2012. Contains 205635 sequences.