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A104911
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Numbers n such that n+prime(n) is the square of a prime.
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1
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12, 86, 230, 1170, 2660, 2772, 6572, 8858, 9590, 16332, 17708, 54540, 63890, 64908, 82830, 98132, 104726, 119298, 136502, 152198, 177918, 187040, 234650, 241682, 253118, 263930, 278970, 376680, 412440, 456110, 469034, 471642, 490650, 524888
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Range[525000], PrimeQ[Sqrt[#+Prime[#]]]&] (* Harvey P. Dale, Jan 28 2020 *)
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PROG
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(PARI) isok(n) = s = n+prime(n); issquare(s) && isprime(sqrtint(s)); \\ Michel Marcus, Oct 05 2013
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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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