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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
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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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internal format)
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OFFSET
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1,1
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LINKS
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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