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Search: id:A045331
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| A045331 |
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Primes congruent to {1, 2, 3} mod 6; or, -3 is a square mod p. |
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+0
8
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| 2, 3, 7, 13, 19, 31, 37, 43, 61, 67, 73, 79, 97, 103, 109, 127, 139, 151, 157, 163, 181, 193, 199, 211, 223, 229, 241, 271, 277, 283, 307, 313, 331, 337, 349, 367, 373, 379, 397, 409, 421, 433, 439, 457, 463, 487, 499, 523, 541, 547, 571, 577, 601, 607, 613
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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-3 is a quadratic residue mod a prime p iff p is in this sequence.
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CROSSREFS
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Cf. A002476, A002313, A033203, A038873, A038874, A057128.
Apart from initial term, same as A007645.
Sequence in context: A076974 A051484 A101415 this_sequence A053613 A013645 A130272
Adjacent sequences: A045328 A045329 A045330 this_sequence A045332 A045333 A045334
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KEYWORD
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nonn,nice,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Henry Bottomley (se16(AT)btinternet.com), Aug 10 2000
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