Continued fraction for sqrt(20).

Terms

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