Greatest integer k such that k/2^n < sqrt(5).

Terms

a(0) =2a(1) =4a(2) =8a(3) =17a(4) =35a(5) =71a(6) =143a(7) =286a(8) =572a(9) =1144a(10) =2289a(11) =4579a(12) =9158a(13) =18317a(14) =36635a(15) =73271a(16) =146542a(17) =293085a(18) =586171a(19) =1172343a(20) =2344687a(21) =4689374a(22) =9378748a(23) =18757497a(24) =37514995a(25) =75029990a(26) =150059981a(27) =300119963a(28) =600239927a(29) =1200479854