On permutations avoiding the dashed patterns 32-41 and 41-32
published by David Callan
in 2014
and research's language is
English
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Abstract in English
We show that permutations of size $n$ avoiding both of the dashed patterns 32-41 and 41-32 are equinumerous with indecomposable set partitions of size $n+1$, and deduce a related result.