Search: id:A065488
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%I A065488
%S A065488 2,6,7,4,1,1,2,7,2,5,5,7,0,0,2,1,5,0,8,9,6,0,4,1,1,8,3,0,4,4,5,4,8,
%T A065488 8,0,3,7,5,0,2,3,9,8,6,2,8,3,9,7,6,9,1,9,8,5,2,0,0,8,1,9,0,4,1,9,6,
%U A065488 0,8,6,5,9,5,6,1,0,5,3,0,2,8,6,8,6,4,4,8,5,0,9,2,9,7,1,7,3,4,8,5,7
%N A065488 Decimal expansion of product(1 + 1/(p^2-p-1)), p prime >= 2).
%C A065488 This is 1/Artin's constant, see A005596.
%H A065488 G. Niklasch, <a href="http://www.gn-50uma.de/alula/essays/Moree/Moree.en.shtml">
               Some number theoretical constants: 1000-digit values</a>
%e A065488 2.67411272557002150896041183...
%Y A065488 Cf. A005596, A048296.
%Y A065488 Sequence in context: A131212 A020771 A021378 this_sequence A016591 A021793 
               A061352
%Y A065488 Adjacent sequences: A065485 A065486 A065487 this_sequence A065489 A065490 
               A065491
%K A065488 cons,nonn
%O A065488 1,1
%A A065488 N. J. A. Sloane (njas(AT)research.att.com), Nov 19 2001

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