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COMBINATORICS
2000
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COMBINATORICS 2000
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Restricted Permutations, Continued Fractions, and Chebyshev Polynomials
13 years 10 months ago
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Let fr n(k) be the number of 132-avoiding permutations on n letters that contain exactly r occurrences of 12 . . . k, and let Fr(x; k) and F (x, y; k) be the generating functions d...
Toufik Mansour, Alek Vainshtein
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