a(n) = 1024*n - 1.

Terms

a(0) =1023a(1) =2047a(2) =3071a(3) =4095a(4) =5119a(5) =6143a(6) =7167a(7) =8191a(8) =9215a(9) =10239a(10) =11263a(11) =12287a(12) =13311a(13) =14335a(14) =15359a(15) =16383a(16) =17407a(17) =18431a(18) =19455a(19) =20479a(20) =21503a(21) =22527a(22) =23551a(23) =24575a(24) =25599a(25) =26623a(26) =27647a(27) =28671a(28) =29695a(29) =30719