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A164314
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Largest prime factor of n^2 - 2.
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3
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2, 7, 7, 23, 17, 47, 31, 79, 7, 17, 71, 167, 97, 223, 127, 41, 23, 359, 199, 439, 241, 31, 41, 89, 337, 727, 23, 839, 449, 137, 73, 1087, 577, 1223, 647, 1367, 103, 31, 47, 73, 881, 1847, 967, 17, 151, 2207, 1151, 2399, 1249, 113, 193, 401, 47, 3023, 1567, 191
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OFFSET
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2,1
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LINKS
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FORMULA
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MAPLE
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a:= n-> max(numtheory[factorset](n^2-2)):
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MATHEMATICA
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PROG
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(PARI) a(n) = vecmax(factor(n^2-2)[, 1]); \\ Michel Marcus, Jul 22 2017
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CROSSREFS
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KEYWORD
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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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