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A151655 Number of permutations of 6 indistinguishable copies of 1..n with exactly 6 adjacent element pairs in decreasing order. 0
0, 1, 5703096, 66555527346, 192698692565176, 316974599311624359 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Sequence in context: A114685 A205045 A139064 * A151699 A038828 A038817

Adjacent sequences:  A151652 A151653 A151654 * A151656 A151657 A151658

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.