%I A131671
%S A131671 3,1,2,8,3,2,9,2,9,5,0,8,8,8,1,8,3,8,3,3,3,2,5,9,3,6,3,9,6,8,5,3,6,4,2,
%T A131671 1,7,5,6,8
%N A131671 Decimal expansion of prime analog of the Kepler-Bouwkamp constant.
%H A131671 A. R. Kitson, <a href="http://arXiv.org/abs/math.HO/0608186">The prime 
               analog of the Kepler-Bouwkamp constant</a>, arXiv:math/0608186.
%F A131671 product{odd primes p} cos(Pi/p) where Pi=3.14159...
%e A131671 0.3128329295..
%Y A131671 Cf. A085365.
%Y A131671 Sequence in context: A084602 A100888 A052914 this_sequence A060750 A086961 
               A085194
%Y A131671 Adjacent sequences: A131668 A131669 A131670 this_sequence A131672 A131673 
               A131674
%K A131671 cons,more,nonn
%O A131671 0,1
%A A131671 R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 12 2007
%E A131671 More digits from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 01 
               2009