Decimal expansion of 1/21.

Terms

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