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A045390 Primes congruent to {1, 2} mod 8. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
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
LINKS
Ray Chandler, Table of n, a(n) for n = 1..10000 (first 1000 terms from Vincenzo Librandi)
MATHEMATICA
Select[Prime[Range[300]], MemberQ[{1, 2}, Mod[#, 8]]&] (* Vincenzo Librandi, Aug 11 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(1300) | p mod 8 in [1, 2]]; // Vincenzo Librandi, Aug 11 2012
CROSSREFS
Cf. A000040.
Sequence in context: A212276 A000956 A031906 * A289135 A072582 A186687
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)