%I A065465
%S A065465 8,8,1,5,1,3,8,3,9,7,2,5,1,7,0,7,7,6,9,2,8,3,9,1,8,2,2,9,0,3,2,2,
%T A065465 7,8,4,7,1,2,9,8,6,9,2,5,7,2,0,8,0,7,6,7,3,3,6,7,0,1,6,8,5,3,5,5,4,
%U A065465 8,6,5,7,9,0,6,3,7,9,4,1,6,9,7,4,1,0,2,2,0,4,5,5,1,7,9,7,0,2,0,9,6
%N A065465 Decimal expansion of product(1 - 1/(p^2*(p+1))), p prime >= 2).
%H A065465 G. Niklasch, <a href="http://www.gn-50uma.de/alula/essays/Moree/Moree.en.shtml">
               Some number theoretical constants: 1000-digit values</a>
%H A065465 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               QuadraticClassNumberConstant.html">Quadratic Class Number Constant</
               a>
%H A065465 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               PrimeProducts.html">Prime Products</a>
%e A065465 0.88151383972517077692839182290...
%Y A065465 Cf. A078087.
%Y A065465 Sequence in context: A091648 A135707 A021923 this_sequence A105193 A011464 
               A019871
%Y A065465 Adjacent sequences: A065462 A065463 A065464 this_sequence A065466 A065467 
               A065468
%K A065465 cons,nonn
%O A065465 0,1
%A A065465 N. J. A. Sloane (njas(AT)research.att.com), Nov 19 2001