A210584 - OEIS

A210584 as a simple table

n	a(n)
1	1
2	2
3	3
4	4
5	12
6	13
7	14
8	23
9	24
10	34
11	112
12	113
13	114
14	122
15	123
16	124
17	132
18	133
19	134
20	142
21	143
22	144
23	223
24	224
25	233
26	234
27	243
28	244
29	334
30	344
31	1112
32	1113
33	1114
34	1122
35	1123
36	1124
37	1132
38	1133
39	1134
40	1142
41	1143
42	1144
43	1213
44	1214
45	1222
46	1223
47	1224
48	1232
49	1233
50	1234

[1,2,3,4,12,13,14,23,24,34,112,113,114,122,123, 124,132,133,134,142,143,144,223,224,233,234,243, 244,334,344,1112,1113,1114,1122,1123,1124,1132, 1133,1134,1142,1143,1144,1213,1214,1222,1223,1224, 1232,1233,1234]