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A056467
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Number of primitive (aperiodic) palindromes using exactly six different symbols.
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2
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 720, 720, 15120, 15120, 191520, 191520, 1905120, 1905120, 16435440, 16435440, 129230640, 129229920, 953029440, 953028720, 6711344640, 6711329520, 45674188560
(list; graph; refs; listen; history; internal format)
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