Search: id:A007639
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%I A007639 M5070
%S A007639 19,23,31,43,59,79,103,131,163,199,239,283,331,383,439,499,563,631,
%T A007639 859,1031,1123,1319,1423,1531,1759,1879,2003,2131,2399,2539,2683,3299,
%U A007639 3463,3631,3803,4159,4723,4919,5119,5323,5531,5743,6863,7583,8599
%N A007639 Primes of form 2n^2 - 2n+19.
%D A007639 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%F A007639 The primes are congruent to {2, 15, 19, 23, 31, 35, 39, 43, 51, 55, 59, 
               79, 87, 91, 103, 119, 131, 135, 143} (mod 148). - T. D. Noe (noe(AT)sspectra.com), 
               May 02 2008
%t A007639 Clear[f,lst,a,n]; f[n_]:=2*n^2-2*n+19; lst={};Do[If[PrimeQ[a=f[n]],AppendTo[lst,
               a]],{n,6!}];lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), 
               Aug 05 2009]
%Y A007639 Cf. A139827.
%Y A007639 Sequence in context: A019384 A088987 A019360 this_sequence A108271 A060269 
               A075585
%Y A007639 Adjacent sequences: A007636 A007637 A007638 this_sequence A007640 A007641 
               A007642
%K A007639 nonn
%O A007639 1,1
%A A007639 N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein, Robert G. 
               Wilson v (rgwv(AT)rgwv.com)

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