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A161925
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Numbers n such that largest prime factor of n is also largest prime factor of n-th composite number.
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0
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5, 6, 7, 15, 24, 26, 28, 30, 55, 93, 99, 105, 112, 175, 182, 209, 276, 292, 296, 300, 304, 308, 312, 399, 506, 522, 539, 549, 558, 644, 744, 784, 832, 905, 950, 1156, 1312, 1328, 1369, 1431, 1458, 1485
(list; graph; refs; listen; history; internal format)
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