A300006 - OEIS

A300006 as a simple table

n	a(n)
1	112
2	113
3	121
4	122
5	123
6	131
7	132
8	133
9	211
10	212
11	213
12	220
13	221
14	222
15	223
16	230
17	231
18	232
19	233
20	311
21	312
22	313
23	320
24	321
25	322
26	323
27	330
28	331
29	332
30	333
31	1012
32	1013
33	1021
34	1022
35	1023
36	1031
37	1032
38	1033
39	1102
40	1103
41	1112
42	1113
43	1120
44	1121
45	1122
46	1123
47	1130
48	1131

[112,113,121,122,123,131,132,133,211,212,213,220, 221,222,223,230,231,232,233,311,312,313,320,321, 322,323,330,331,332,333,1012,1013,1021,1022,1023, 1031,1032,1033,1102,1103,1112,1113,1120,1121,1122, 1123,1130,1131]