The integer k that minimizes |k/2^n - sqrt(5)|.

Terms

a(0) =2a(1) =4a(2) =9a(3) =18a(4) =36a(5) =72a(6) =143a(7) =286a(8) =572a(9) =1145a(10) =2290a(11) =4579a(12) =9159a(13) =18318a(14) =36636a(15) =73271a(16) =146543a(17) =293086a(18) =586172a(19) =1172344a(20) =2344687a(21) =4689374a(22) =9378749a(23) =18757498a(24) =37514995a(25) =75029991a(26) =150059982a(27) =300119964a(28) =600239927a(29) =1200479854