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A151636 Number of permutations of 3 indistinguishable copies of 1..n with exactly 6 adjacent element pairs in decreasing order. +0
1
0, 1, 49682, 58571184, 21475242671, 4476844162434, 678770257169016 (list; graph; listen)
OFFSET

2,3

CROSSREFS

Sequence in context: A045085 A054730 A081636 this_sequence A023944 A159233 A145538

Adjacent sequences: A151633 A151634 A151635 this_sequence A151637 A151638 A151639

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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