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A151647 Number of permutations of 5 indistinguishable copies of 1..n with exactly 2 adjacent element pairs in decreasing order. +0
1
0, 100, 5925, 167475, 3882250, 84320250, 1791011475 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A035810 A017763 A053109 this_sequence A065689 A117687 A108741

Adjacent sequences: A151644 A151645 A151646 this_sequence A151648 A151649 A151650

KEYWORD

nonn

AUTHOR

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

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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