Search: id:A013705
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%I A013705
%S A013705 3,1,4,1,5,9,0,6,5,3,5,8,9,7,9,3,2,4,0,4,6,2,6,4,3,3,8,3,2,6,9,5,0,
%T A013705 2,8,8,4,1,9,7,2,9,1,3,9,9,3,7,5,1,0,3,0,5,0,9,7,4,9,4,4,6,9,3,3,4,
%U A013705 9,8,1,6,4,0,0,8,8,0,6,8,0,5
%N A013705 Decimal expansion of 4 sum {k = 1...500,000} (-1)^(k-1)/(2k-1).
%D A013705 J. M. Borwein, P. B. Borwein and K. Dilcher, Pi, Euler numbers and asymptotic 
               expansions, Amer. Math. Monthly, 96 (1989), 681-687.
%H A013705 J. M. Borwein and R. M. Corless, <a href="http://www.cecm.sfu.ca/~jborwein/
               sloane/sloane.html">Review of ``An Encyclopedia of Integer Sequences'' 
               by N. J. A. Sloane and Simon Plouffe"</a>, SIAM Review, 38 (1996), 
               333-337.
%e A013705 3.1415906535897932404626433832695028841972913993751030509749446933498164008806805...
%Y A013705 Cf. A000796, A013707, A013706.
%Y A013705 Sequence in context: A035687 A166050 A152040 this_sequence A087478 A112602 
               A000796
%Y A013705 Adjacent sequences: A013702 A013703 A013704 this_sequence A013706 A013707 
               A013708
%K A013705 cons,nonn
%O A013705 1,1
%A A013705 N. J. A. Sloane (njas(AT)research.att.com).

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