Length of period of continued fraction expansion of sqrt(3*2^n).

Terms

a(0) =2a(1) =2a(2) =2a(3) =2a(4) =2a(5) =4a(6) =4a(7) =8a(8) =8a(9) =12a(10) =16a(11) =32a(12) =36a(13) =60a(14) =72a(15) =128a(16) =136a(17) =244a(18) =292a(19) =508a(20) =576a(21) =972a(22) =1120a(23) =1992a(24) =2272a(25) =3948a(26) =4588a(27) =7924a(28) =9056a(29) =15764