Search: id:A091277
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%I A091277
%S A091277 3,6,13,18,30,42,65,82,112,135,170,197,212,271,284,319,353,369,445,505,
%T A091277 612,682,933,1069,1193,1226,1286,1510,1609,1676,1711,1789,1900,2161,
%U A091277 2241,2285,2363,2450,2667,2712,2924,3247,3644,3894,4000,4100,4367,4647
%N A091277 k-th prime is of the form n^2 + (n+1)^2.
%C A091277 Also k-th prime is of the form (n^2+1)/2.
%F A091277 a(n)=k such that A000040(k)=A027862(n).
%Y A091277 A027862 indexed by A000040. A027862 gives primes arising in A002731, 
               A027861.
%Y A091277 Sequence in context: A115283 A078382 A075651 this_sequence A136484 A137039 
               A137035
%Y A091277 Adjacent sequences: A091274 A091275 A091276 this_sequence A091278 A091279 
               A091280
%K A091277 nonn,easy
%O A091277 0,1
%A A091277 Ray Chandler (rayjchandler(AT)sbcglobal.net), Jan 03 2004

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