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Search: id:A151597
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A151597 Number of permutations of 4 indistinguishable copies of 1..n arranged in a circle with exactly 2 adjacent element pairs in decreasing order. +0
1
0, 36, 606, 4744, 30850, 186924, 1092966, 6248976 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A081447 A099764 A003841 this_sequence A126926 A163720 A129839

Adjacent sequences: A151594 A151595 A151596 this_sequence A151598 A151599 A151600

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) May 21 2009

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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