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Search: id:A098774
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| A098774 |
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Least k such that (k*Mersenne-prime(n))^2 + 1 is prime. |
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+0 1
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| 2, 2, 4, 12, 80, 34, 8, 12, 94, 96, 668, 198, 1170, 38, 700, 2402, 394, 7154, 4040, 1740, 4644, 8976, 12300
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