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A124488
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Numbers n such that 2n-1, 4n-1, 6n-1, 8n-1 and 10n-1 are primes.
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0
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3, 45, 6450, 18000, 22785, 41790, 54180, 77385, 87675, 98385, 103005, 104520, 151515, 187005, 210210, 244590, 256620, 320775, 329175, 354795, 382875, 387975, 431385, 495540, 509355, 528510, 632775, 763815, 804870, 810540, 812175, 849285
(list; graph; refs; listen; history; internal format)
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