Wilf Equivalent

Two sets T_1 and T_2 are called Wilf equivalent if they belong to the same Wilf class.

See also

Wilf Class, Permutation Pattern

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Mansour, T. "Permutations Avoiding a Pattern from S_k and at Least Two Patterns from S_3." 31 Jul 2000.

Referenced on Wolfram|Alpha

Wilf Equivalent

Cite this as:

Weisstein, Eric W. "Wilf Equivalent." From MathWorld--A Wolfram Web Resource.

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