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A063015
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Numbers k such that k + mu(k) is prime.
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4
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1, 3, 6, 10, 22, 30, 42, 46, 58, 82, 102, 106, 110, 114, 138, 166, 174, 178, 182, 210, 226, 230, 258, 262, 282, 318, 330, 346, 354, 358, 374, 382, 402, 410, 434, 462, 466, 478, 502, 546, 562, 570, 586, 602, 618, 642, 654, 678, 690, 710, 718, 762, 822, 830
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Select[ Range[ 1, 830 ], PrimeQ[ #+MoebiusMu[ # ] ]& ]
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PROG
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(PARI) { n=0; for (m=1, 10^9, if (isprime(m + moebius(m)), write("b063015.txt", n++, " ", m); if (n==1000, break)) ) } \\ Harry J. Smith, Aug 15 2009
(Magma) [n: n in [1..900] |IsPrime(n + MoebiusMu(n))]; // Vincenzo Librandi, Jun 28 2018
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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