A084854 - OEIS

A084854 as a simple table

n	a(n)
1	11
2	21
3	22
4	31
5	32
6	33
7	41
8	42
9	43
10	44
11	51
12	52
13	53
14	54
15	55
16	61
17	62
18	63
19	64
20	65
21	66
22	71
23	72
24	73
25	74
26	75
27	76
28	77
29	81
30	82
31	83
32	84
33	85
34	86
35	87
36	88
37	91
38	92
39	93
40	94
41	95
42	96
43	97
44	98
45	99
46	101
47	102
48	103
49	104
50	105
51	106
52	107
53	108
54	109
55	1010
56	111
57	112
58	113
59	114
60	115
61	116
62	117
63	118
64	119
65	1110
66	1111

[11,21,22,31,32,33,41,42,43,44,51,52,53,54,55,61, 62,63,64,65,66,71,72,73,74,75,76,77,81,82,83,84, 85,86,87,88,91,92,93,94,95,96,97,98,99,101,102, 103,104,105,106,107,108,109,1010,111,112,113,114, 115,116,117,118,119,1110,1111]