First occurrence of n in A111633.

Terms

a(0) =1a(1) =11a(2) =13a(3) =14a(4) =15a(5) =16a(6) =17a(7) =18a(8) =19a(9) =25a(10) =205a(11) =1139a(12) =1149a(13) =1159a(14) =26a(15) =206a(16) =1189a(17) =1199a(18) =1259a(19) =36a(20) =27a(21) =207a(22) =1268a(23) =1269a(24) =1274a(25) =1275a(26) =1276a(27) =28a(28) =208a(29) =1279