a(n) = 33-n.

Terms

a(0) =33a(1) =32a(2) =31a(3) =30a(4) =29a(5) =28a(6) =27a(7) =26a(8) =25a(9) =24a(10) =23a(11) =22a(12) =21a(13) =20a(14) =19a(15) =18a(16) =17a(17) =16a(18) =15a(19) =14a(20) =13a(21) =12a(22) =11a(23) =10a(24) =9a(25) =8a(26) =7a(27) =6a(28) =5a(29) =4