Decimal expansion of square root of 21.

Terms

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