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A243299
Total number of Bona classes for patterns of length n defined on the set of 123-avoiding permutations.
0
1, 2, 3, 6, 12, 32
OFFSET
1,2
CROSSREFS
Sequence in context: A089430 A337638 A213242 * A096746 A102970 A144771
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jun 02 2014
STATUS
approved