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A057125
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Numbers n such that 3 is a square mod n.
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9
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1, 2, 3, 6, 11, 13, 22, 23, 26, 33, 37, 39, 46, 47, 59, 61, 66, 69, 71, 73, 74, 78, 83, 94, 97, 107, 109, 111, 118, 121, 122, 131, 138, 141, 142, 143, 146, 157, 166, 167, 169, 177, 179, 181, 183, 191, 193, 194, 213, 214, 218, 219, 222, 227, 229, 239, 241, 242
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
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EXAMPLE
| 3^2==3 (mod 6), so 6 is a member.
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MAPLE
| Beware: in 2007 at least, the Maple code: with(numtheory); [seq(mroot(3, 2, n), n=1..400)]; returned the wrong answer for n = 6.
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CROSSREFS
| Includes the primes in A038874 and these (primes congruent to {1, 2, 3, 11} mod 12) are the prime factors of the terms in this sequence. Cf. A008784, A057126, A057127, A057128, A057129.
Cf. A057759.
Sequence in context: A124593 A125882 A057758 * A018687 A042944 A163781
Adjacent sequences: A057122 A057123 A057124 * A057126 A057127 A057128
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KEYWORD
| nonn
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Aug 10 2000
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EXTENSIONS
| Edited by N. J. A. Sloane (njas(AT)research.att.com), Oct 25 2008 at the suggestion of R. J. Mathar.
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