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A151604
Number of permutations of 5 indistinguishable copies of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order.
0
0, 120, 23580, 1041140, 31611675, 836679060
OFFSET
1,2
CROSSREFS
Sequence in context: A105188 A264957 A270604 * A104008 A278726 A227667
KEYWORD
nonn
AUTHOR
R. H. Hardin May 21 2009
STATUS
approved