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A151593
Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 5 adjacent element pairs in decreasing order.
0
0, 117, 149520, 26591700, 2321730306, 143576370000, 7341810391656
OFFSET
2,2
CROSSREFS
Sequence in context: A194613 A079196 A113798 * A263425 A066923 A039556
KEYWORD
nonn
AUTHOR
R. H. Hardin May 21 2009
STATUS
approved