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A151595
Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 7 adjacent element pairs in decreasing order.
0
0, 15048, 53145540, 33478094610, 9810742830462, 1894605563973312
OFFSET
3,2
CROSSREFS
Sequence in context: A295453 A205022 A207297 * A254581 A254588 A254356
KEYWORD
nonn
AUTHOR
R. H. Hardin May 21 2009
STATUS
approved