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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
1
0, 1, 4961755, 93200908410, 342907451401150, 580563155365559991 (list; graph; listen)
OFFSET

2,3

CROSSREFS

Sequence in context: A089234 A143687 A157804 this_sequence A106785 A034607 A015363

Adjacent sequences: A151643 A151644 A151645 this_sequence A151647 A151648 A151649

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) May 29 2009

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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