Abstract
We compute the number of rhombus tilings of a hexagon with sidesN,M,N, N,M,N, which contain a fixed rhombus on the symmetry axis that cuts through the sides of lengthM.
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Fulmek, M., Krattenthaler, C. The number of rhombus tilings of a symmetric hexagon which contain a fixed rhombus on the symmetry axis, I. Annals of Combinatorics 2, 19–41 (1998). https://doi.org/10.1007/BF01626027
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DOI: https://doi.org/10.1007/BF01626027