Search: id:A005850
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%I A005850 M2426
%S A005850 3,5,7,19,29,47,59,163,257,421,937,947,1493,1901,6689,8087,9679,28753,
%T A005850 79043,129127,145969,165799,168677,170413,172243
%N A005850 Primes p such that the NSW number A002315(p) is prime.
%C A005850 Some of the larger entries may only correspond to probable primes.
%D A005850 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A005850 P. Ribenboim, The Book of Prime Number Records. Springer-Verlag, NY, 
               2nd ed., 1989, p. 290.
%H A005850 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               PellNumber.html">Pell Number</a>
%H A005850 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               PythagorassConstant.html">Pythagoras's Constant</a>
%Y A005850 Cf. A002315.
%Y A005850 A099088 is a closely related sequence.
%Y A005850 Sequence in context: A154524 A079131 A106919 this_sequence A052334 A154526 
               A126144
%Y A005850 Adjacent sequences: A005847 A005848 A005849 this_sequence A005851 A005852 
               A005853
%K A005850 nonn,nice,hard
%O A005850 1,1
%A A005850 N. J. A. Sloane (njas(AT)research.att.com).
%E A005850 6689, 8087, 9679 reported by Warut Roonguthai on the PrimeForm mailing 
               list.
%E A005850 28753 found by Andrew Walker (ajw01(AT)uow.edu.au), Jul 12 2001.
%E A005850 129127, 145969, 165799, 168677, 170413, 172243 found by Eric Weisstein 
               (eric(AT)weisstein.com), May 22, 2006 - Jan 25,2007 [from Mike Oakes, 
               Mar 29 2009]

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