Search: id:A090612
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%I A090612
%S A090612 2,8,21,38,153,191,232,279,327,378,493,559,1086,1272,1360,1769,1989,
%T A090612 2111,2224,2344,2471,3272,3721,3863,4838,5006,5359,6291,6871,7077,7909,
%U A090612 8127,9245,9928,10654,10889,12164,12957,13764,14881,16034,16343,16944
%N A090612 n-th prime is of the form 2*k^2+1.
%C A090612 A090698 indexed by A000040.
%F A090612 a(n)=k such that A000040(k)=A090698(n)=2*A089001(n)^2+1.
%Y A090612 Cf. A089001, A089008, A090698.
%Y A090612 Sequence in context: A001471 A162585 A000159 this_sequence A051744 A062443 
               A141582
%Y A090612 Adjacent sequences: A090609 A090610 A090611 this_sequence A090613 A090614 
               A090615
%K A090612 nonn
%O A090612 1,1
%A A090612 Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 21 2003

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