A038527 - OEIS

A038527 as a simple table

n	a(n)
1	1
2	10
3	12
4	20
5	21
6	22
7	100
8	102
9	103
10	120
11	123
12	130
13	132
14	133
15	200
16	201
17	202
18	203
19	210
20	213
21	220
22	223
23	230
24	231
25	232
26	300
27	301
28	302
29	303
30	310
31	312
32	313
33	320
34	321
35	322
36	330
37	331
38	333
39	1000
40	1002
41	1003
42	1004
43	1020
44	1023
45	1024
46	1030
47	1032
48	1033
49	1034

[1,10,12,20,21,22,100,102,103,120,123,130,132,133, 200,201,202,203,210,213,220,223,230,231,232,300, 301,302,303,310,312,313,320,321,322,330,331,333, 1000,1002,1003,1004,1020,1023,1024,1030,1032,1033, 1034]