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A038928
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Primes p such that 47 is not a square mod p.
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2
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3, 5, 7, 13, 29, 41, 59, 71, 73, 79, 83, 103, 109, 113, 131, 137, 181, 191, 193, 229, 233, 239, 251, 257, 263, 271, 281, 283, 293, 307, 313, 317, 331, 347, 349, 373, 379, 383, 389, 409, 421, 431, 433, 439, 449
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OFFSET
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1,1
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COMMENTS
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Also, only entries p=1 (mod 4) of the sequence are not squares mod 47 (from the quadratic reciprocity law). - Lekraj Beedassy, Jul 21 2004
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LINKS
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MATHEMATICA
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Select[Prime@Range[120], JacobiSymbol[47, #] == -1 &] (* Vincenzo Librandi, Sep 09 2012 *)
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PROG
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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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