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AIME 2023b Problem 7

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Each vertex of a regular dodecagon (1212-gon) is to be colored either red or blue, and thus there are 2122^{12} possible colorings. Find the number of these colorings with the property that no four vertices colored the same color are the four vertices of a rectangle.

Dataset text AIME 1983 to 2026. Quoted with source.

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928

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