A085305 - OEIS

A085305 as a simple table

n	a(n)
1	0
2	1
3	2
4	3
5	11
6	12
7	13
8	21
9	22
10	31
11	101
12	102
13	103
14	111
15	112
16	113
17	121
18	122
19	201
20	202
21	211
22	212
23	221
24	301
25	311
26	1001
27	1002
28	1003
29	1011
30	1012
31	1013
32	1021
33	1022
34	1031
35	1101
36	1102
37	1103
38	1111
39	1112
40	1113
41	1121
42	1122
43	1201
44	1202
45	1211
46	1212
47	1301
48	2001
49	2002
50	2011

[0,1,2,3,11,12,13,21,22,31,101,102,103,111,112, 113,121,122,201,202,211,212,221,301,311,1001,1002, 1003,1011,1012,1013,1021,1022,1031,1101,1102,1103, 1111,1112,1113,1121,1122,1201,1202,1211,1212,1301, 2001,2002,2011]