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A151648 Number of permutations of 5 indistinguishable copies of 1..n with exactly 3 adjacent element pairs in decreasing order. 0
0, 100, 52800, 6021225, 447069750, 28203920250, 1662432014600 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A027576 A099374 A163663 * A013747 A065447 A036507

Adjacent sequences:  A151645 A151646 A151647 * A151649 A151650 A151651

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) May 29 2009

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.