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A090563
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Numbers n such that 5*n^2 + 5*n + 1 is prime.
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15
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1, 2, 3, 4, 5, 6, 7, 11, 13, 14, 15, 16, 17, 19, 21, 22, 24, 25, 26, 30, 32, 35, 36, 38, 43, 44, 49, 52, 54, 55, 60, 61, 62, 63, 66, 69, 70, 71, 73, 74, 79, 80, 81, 82, 85, 87, 88, 93, 94, 101, 104, 106, 107, 109, 110, 112, 114, 115, 117, 123, 127, 128, 131, 135
(list; graph; refs; listen; history; internal format)
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