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coloring on n points on circle

Source: Slovenia TST 1997 p3

February 15, 2020
combinatoricscombinatorial geometrypointsColoring

Problem Statement

Let A1,A2,...,AnA_1,A_2,...,A_n be n≥2n \ge 2 distinct points on a circle. Find the number of colorings of these points with p≥2p \ge 2 colors such that every two adjacent points receive different colors
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