Search: id:A137291
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%I A137291
%S A137291 1,2,3,4,6,8,10,12,14,15,18,20,24,27,28,31,32,34,40,43,47,48,51,52,55,
%T A137291 62,65,68,72,82,86,87,91,94,99,100,104,107,111,119,123,128,129,130,132,
%U A137291 133,134,135,139,141,150,152,170,172,177,180,182,191,200,202,209,211
%N A137291 Numbers n such that p(n)^2-2 is prime where p(n) is the n-th prime.
%F A137291 a(n)=A049084(A049002(n)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), 
               Apr 09 2008
%e A137291 n=24 : p(24)*p(24)-2=89*89-2=7919 is prime, n=24 belongs to the sequence.
%Y A137291 Cf. A000040.
%Y A137291 Sequence in context: A081000 A064377 A034884 this_sequence A032954 A158023 
               A004271
%Y A137291 Adjacent sequences: A137288 A137289 A137290 this_sequence A137292 A137293 
               A137294
%K A137291 easy,nonn
%O A137291 0,2
%A A137291 Ctibor O. Zizka (ctibor.zizka(AT)seznam.cz), Apr 05 2008
%E A137291 More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 09 2008

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