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A102656
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Numbers n such that 11*n + 1 is prime.
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3
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2, 6, 8, 18, 30, 32, 36, 38, 42, 56, 60, 62, 66, 78, 80, 86, 90, 92, 102, 116, 120, 128, 132, 146, 162, 170, 182, 188, 192, 198, 206, 210, 212, 216, 218, 230, 242, 246, 248, 260, 266, 270, 276, 288, 290, 296, 300, 302, 308, 312, 318, 330, 336, 338, 350, 356, 366
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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At n=2, 11*2 + 1 = 23 (prime).
At n=60, 11*60 + 1 = 661 (prime).
At n=120, 11*120 + 1 = 1321 (prime).
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MAPLE
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select(t -> isprime(11*t+1), [seq(i, i=2..1000, 2)]); # Robert Israel, Apr 03 2019
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MATHEMATICA
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PROG
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(Magma) [n: n in [1..380] | IsPrime(11*n+1)]; // G. C. Greubel, Apr 03 2019
(Sage) [n for n in (1..380) if is_prime(11*n+1)] # G. C. Greubel, Apr 03 2019
(GAP) Filtered([1..380], n-> IsPrime(11*n+1)) # G. C. Greubel, Apr 03 2019
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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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