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A124412
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Numbers n such that 2n+1, 4n+1, 8n+1 and 16n+1 are primes.
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6
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765, 1065, 1155, 1530, 3105, 3420, 3705, 5160, 6840, 7695, 8325, 9060, 11265, 11505, 12195, 14835, 15390, 15885, 16650, 17655, 20745, 22185, 23205, 27300, 28155, 28995, 30165, 30690, 33300, 33825, 39015, 41715, 42690, 44370, 48465, 49935
(list; graph; refs; listen; history; internal format)
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