Least integer k such that k/2^n > sqrt(1/5).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =15a(6) =29a(7) =58a(8) =115a(9) =229a(10) =458a(11) =916a(12) =1832a(13) =3664a(14) =7328a(15) =14655a(16) =29309a(17) =58618a(18) =117235a(19) =234469a(20) =468938a(21) =937875a(22) =1875750a(23) =3751500a(24) =7503000a(25) =15005999a(26) =30011997a(27) =60023993a(28) =120047986a(29) =240095971