A109683 - OEIS

A109683 as a simple table

n	a(n)
0	0
1	1
2	12
3	10
4	11
5	22
6	20
7	121
8	102
9	100
10	101
11	112
12	110
13	111
14	122
15	120
16	221
17	202
18	200
19	201
20	212
21	210
22	211
23	222
24	1220
25	1021
26	1002
27	1000
28	1001
29	1012
30	1010
31	1011
32	1022
33	1020
34	1121
35	1102
36	1100
37	1101
38	1112
39	1110
40	1111
41	1122
42	1120
43	1221
44	1202
45	1200

[0,1,12,10,11,22,20,121,102,100,101,112,110,111, 122,120,221,202,200,201,212,210,211,222,1220,1021, 1002,1000,1001,1012,1010,1011,1022,1020,1121,1102, 1100,1101,1112,1110,1111,1122,1120,1221,1202,1200]