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A151658 Number of permutations of 8 indistinguishable copies of 1..n with exactly 2 adjacent element pairs in decreasing order. +0
1
0, 784, 73200, 3884640, 182107936, 8277726192 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A007243 A146978 A095954 this_sequence A159896 A031734 A031616

Adjacent sequences: A151655 A151656 A151657 this_sequence A151659 A151660 A151661

KEYWORD

nonn

AUTHOR

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

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.

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