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A151646 Number of permutations of 4 indistinguishable copies of 1..n with exactly 8 adjacent element pairs in decreasing order. 0
0, 1, 4961755, 93200908410, 342907451401150, 580563155365559991 (list; graph; refs; listen; history; internal format)
OFFSET

2,3

CROSSREFS

Sequence in context: A178136 A143687 A157804 * A106785 A034607 A015363

Adjacent sequences:  A151643 A151644 A151645 * A151647 A151648 A151649

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.