The Permutations 123 ::::p:::: ::4::... ::::p:::: :: ::::m:::: :: and 321 ::::p:::: ::4::... ::::p:::: :: ::::m:::: :: are Wilf-Equivalent

Eric Babson, Julian West. The Permutations 123 ::::p:::: ::4::... ::::p:::: :: ::::m:::: :: and 321 ::::p:::: ::4::... ::::p:::: :: ::::m:::: :: are Wilf-Equivalent. Graphs and Combinatorics, 16(4):373-380, 2000. [doi]

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