Decimal expansion of 2*Sum_{k=1..50000} (-1)^(k-1)/(2k-1).

Terms

a(0) =1a(1) =5a(2) =7a(3) =0a(4) =7a(5) =8a(6) =6a(7) =3a(8) =2a(9) =6a(10) =7a(11) =9a(12) =4a(13) =8a(14) =9a(15) =7a(16) =6a(17) =1a(18) =9a(19) =2a(20) =3a(21) =1a(22) =3a(23) =2a(24) =1a(25) =1a(26) =9a(27) =1a(28) =6a(29) =3