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A118129
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Numbers n such that the sum of the first n odd composites is palindromic in base 3.
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0
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6, 14, 20, 424, 1042, 8290, 20802, 21644, 440512, 548008, 749171, 4366390, 5378548, 9850174, 17930596, 36158854, 130427194, 407305710
(list; graph; refs; listen; history; internal format)
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