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A151651 Number of permutations of 6 indistinguishable copies of 1..n with exactly 2 adjacent element pairs in decreasing order. +0
1
0, 225, 15606, 554931, 16689816, 477537957 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A167042 A164763 A164752 this_sequence A051364 A061051 A036428

Adjacent sequences: A151648 A151649 A151650 this_sequence A151652 A151653 A151654

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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