a(n) = 3*n + 2.

Terms

a(0) =2a(1) =5a(2) =8a(3) =11a(4) =14a(5) =17a(6) =20a(7) =23a(8) =26a(9) =29a(10) =32a(11) =35a(12) =38a(13) =41a(14) =44a(15) =47a(16) =50a(17) =53a(18) =56a(19) =59a(20) =62a(21) =65a(22) =68a(23) =71a(24) =74a(25) =77a(26) =80a(27) =83a(28) =86a(29) =89