a(n) = 9*n + 1.

Terms

a(0) =1a(1) =10a(2) =19a(3) =28a(4) =37a(5) =46a(6) =55a(7) =64a(8) =73a(9) =82a(10) =91a(11) =100a(12) =109a(13) =118a(14) =127a(15) =136a(16) =145a(17) =154a(18) =163a(19) =172a(20) =181a(21) =190a(22) =199a(23) =208a(24) =217a(25) =226a(26) =235a(27) =244a(28) =253a(29) =262