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A151596
Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 8 adjacent element pairs in decreasing order.
0
0, 720, 22306500, 44859920256, 30335281455906, 11524809684506112
OFFSET
3,2
CROSSREFS
Sequence in context: A008979 A158044 A181751 * A068300 A003792 A208192
KEYWORD
nonn
AUTHOR
R. H. Hardin May 21 2009
STATUS
approved