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A151652 Number of permutations of 6 indistinguishable copies of 1..n with exactly 3 adjacent element pairs in decreasing order. +0
1
0, 400, 233300, 35138736, 3656408776, 333546436832 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A108034 A151608 A022232 this_sequence A013767 A013895 A159890

Adjacent sequences: A151649 A151650 A151651 this_sequence A151653 A151654 A151655

KEYWORD

nonn

AUTHOR

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

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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