a(n) = 900*n - 1.

Terms

a(0) =899a(1) =1799a(2) =2699a(3) =3599a(4) =4499a(5) =5399a(6) =6299a(7) =7199a(8) =8099a(9) =8999a(10) =9899a(11) =10799a(12) =11699a(13) =12599a(14) =13499a(15) =14399a(16) =15299a(17) =16199a(18) =17099a(19) =17999a(20) =18899a(21) =19799a(22) =20699a(23) =21599a(24) =22499a(25) =23399a(26) =24299a(27) =25199a(28) =26099a(29) =26999