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A151604 Number of permutations of 5 indistinguishable copies of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order. 0
0, 120, 23580, 1041140, 31611675, 836679060 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Sequence in context: A105188 A264957 A270604 * A104008 A278726 A227667

Adjacent sequences:  A151601 A151602 A151603 * A151605 A151606 A151607

KEYWORD

nonn

AUTHOR

R. H. Hardin May 21 2009

STATUS

approved

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Last modified September 27 03:21 EDT 2020. Contains 337380 sequences. (Running on oeis4.)