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Search: id:A151581
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A151581 Number of permutations of 1..n arranged in a circle with exactly 8 adjacent element pairs in decreasing order. +0
1
0, 9, 5020, 526240, 26441856, 862140162, 21078701112, 419567641380, 7160621079552 (list; graph; listen)
OFFSET

8,2

CROSSREFS

Sequence in context: A163018 A167064 A125541 this_sequence A145263 A133248 A125542

Adjacent sequences: A151578 A151579 A151580 this_sequence A151582 A151583 A151584

KEYWORD

nonn

AUTHOR

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

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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