a(n) = ceiling(n*phi^15), where phi is the golden ratio, A001622.

Terms

a(0) =0a(1) =1365a(2) =2729a(3) =4093a(4) =5457a(5) =6821a(6) =8185a(7) =9549a(8) =10913a(9) =12277a(10) =13641a(11) =15005a(12) =16369a(13) =17733a(14) =19097a(15) =20461a(16) =21825a(17) =23189a(18) =24553a(19) =25917a(20) =27281a(21) =28645a(22) =30009a(23) =31373a(24) =32737a(25) =34101a(26) =35465a(27) =36829a(28) =38193