Least k such that floor(k/r^n)=n, where r = golden ratio = (1+sqrt(5))/2.

Terms

a(0) =2a(1) =6a(2) =13a(3) =28a(4) =56a(5) =108a(6) =204a(7) =376a(8) =685a(9) =1230a(10) =2190a(11) =3864a(12) =6774a(13) =11802a(14) =20461a(15) =35312a(16) =60708a(17) =104004a(18) =177632a(19) =302540a(20) =513997a(21) =871266a(22) =1473818a(23) =2488368a(24) =4194026a(25) =7057518a(26) =11858509a(27) =19898116a(28) =33345680a(29) =55814940