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 A007521 Primes of the form 8n + 5. (Formerly M3828) 47
 5, 13, 29, 37, 53, 61, 101, 109, 149, 157, 173, 181, 197, 229, 269, 277, 293, 317, 349, 373, 389, 397, 421, 461, 509, 541, 557, 613, 653, 661, 677, 701, 709, 733, 757, 773, 797, 821, 829, 853, 877, 941, 997, 1013, 1021, 1061, 1069, 1093, 1109 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Primes of the form 4x^2 - 4xy + 5y^2 with x and y nonnegative. - T. D. Noe, May 08 2005 REFERENCES Milton Abramowitz and Irene A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 870. N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS Ray Chandler, Table of n, a(n) for n = 1..10000 (first 1000 terms from T. D. Noe) Milton Abramowitz and Irene A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy]. MATHEMATICA Select[8Range[0, 160] + 5, PrimeQ]  (* Harvey P. Dale, Apr 22 2011 *) PROG (PARI) list(lim)=select(n->n%8==5, primes(primepi(lim))) \\ Charles R Greathouse IV, Jul 25 2011 (Haskell) a007521 n = a007521_list !! (n-1) a007521_list = filter ((== 1). a010051) a004770_list -- Reinhard Zumkeller, Aug 17 2012 (MAGMA) [p: p in PrimesUpTo(2000) | p mod 8 eq 5]; // Vincenzo Librandi, Jun 26 2014 CROSSREFS Cf. A010051. Subsequence of A004770; see also A045323. Sequence in context: A152658 A100877 A261580 * A294919 A213050 A216822 Adjacent sequences:  A007518 A007519 A007520 * A007522 A007523 A007524 KEYWORD nonn,easy,nice AUTHOR STATUS approved

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Last modified May 29 07:50 EDT 2020. Contains 334697 sequences. (Running on oeis4.)