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A045390
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Primes congruent to {1, 2} mod 8.
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3
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2, 17, 41, 73, 89, 97, 113, 137, 193, 233, 241, 257, 281, 313, 337, 353, 401, 409, 433, 449, 457, 521, 569, 577, 593, 601, 617, 641, 673, 761, 769, 809, 857, 881, 929, 937, 953, 977, 1009, 1033, 1049, 1097, 1129
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OFFSET
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1,1
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COMMENTS
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Essentially the same as A007519: 2 followed by A007519.
Primes p such that -1 is a 4th power (mod p). E.g.: 1^4 == -1 (mod 2), 2^4 == -1 (mod 17), 3^4 == -1 (mod 41), 10^4 == -1 (mod 73). - Eric M. Schmidt, Mar 27 2014
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LINKS
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Ray Chandler, Table of n, a(n) for n = 1..10000 (first 1000 terms from Vincenzo Librandi)
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MATHEMATICA
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Select[Prime[Range[300]], MemberQ[{1, 2}, Mod[#, 8]]&] (* Vincenzo Librandi, Aug 11 2012 *)
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PROG
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(Magma) [p: p in PrimesUpTo(1300) | p mod 8 in [1, 2]]; // Vincenzo Librandi, Aug 11 2012
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CROSSREFS
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Cf. A000040.
Sequence in context: A212276 A000956 A031906 * A289135 A072582 A186687
Adjacent sequences: A045387 A045388 A045389 * A045391 A045392 A045393
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane
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STATUS
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approved
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