Search: id:A091515
Results 1-1 of 1 results found.

%I A091515
%S A091515 2,3,4,6,7,10,12,15,18,19,21,25,27,55,129,132,159,171,175,315,324,358,
%T A091515 393,435,786,1459,1707,2923,6462,14289,39012,51637,100224,108127,110953,
%U A091515 175749,185580,226749,248949,253987
%N A091515 Indices n of Carol (or near-square) primes: numbers n such that (2^n-1)^2-2 
               = 4^n-2^{n+1}-1 is prime.
%H A091515 Steven Harvey, <a href="http://www.geocities.com/harvey563/Carol_Kynea.txt">
               Carol and Kynea Primes</a>.
%H A091515 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Near-SquarePrime.html">Near-Square Prime</a>
%H A091515 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               IntegerSequencePrimes.html">Integer Sequence Primes</a>
%t A091515 lst={};Do[p=(2^n-1)^2-2;If[PrimeQ[p],AppendTo[lst,n]],{n,7!}];lst [From 
               Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 27 2009]
%Y A091515 Cf. A093112 (Carol numbers), A091516 (Carol primes).
%Y A091515 Sequence in context: A049806 A158381 A163180 this_sequence A036405 A051424 
               A137606
%Y A091515 Adjacent sequences: A091512 A091513 A091514 this_sequence A091516 A091517 
               A091518
%K A091515 nonn,hard
%O A091515 1,1
%A A091515 Eric Weisstein (eric(AT)weisstein.com), Jan 17, 2004
%E A091515 More terms from Pab Ter (pabrlos(AT)yahoo.com), May 25 2004
%E A091515 a(36)=175749 from Cletus Emmanuel (cemmanu(AT)yahoo.com), Oct 08 2004
%E A091515 a(37)=185580 from Cletus Emmanuel (cemmanu(AT)yahoo.com), Nov 03 2004
%E A091515 Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 15, 2004
%E A091515 a(38)=226749 from Steven Harvey (harvey563(AT)yahoo.com), Jan 11 2005 
               and subsequently confirmed as next term.
%E A091515 a(39) from Eric Weisstein (eric(AT)weisstein.com), Mar 31, 2006
%E A091515 a(40)=253987 from Cletus Emmanuel (cemmanu(AT)yahoo.com), May 03 2007

Search completed in 0.001 seconds