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A151645 Number of permutations of 4 indistinguishable copies of 1..n with exactly 7 adjacent element pairs in decreasing order. 0
0, 112, 15018688, 69830127680, 99825129369600, 79985306860607376 (list; graph; refs; listen; history; internal format)
OFFSET

2,2

CROSSREFS

Sequence in context: A184898 A180039 A159432 * A115486 A157885 A204377

Adjacent sequences:  A151642 A151643 A151644 * A151646 A151647 A151648

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 12:41 EST 2012. Contains 205909 sequences.