A136835 - OEIS

A136835 as a simple table

n	a(n)
1	0
2	1
3	9
4	10
5	11
6	90
7	91
8	99
9	100
10	101
11	109
12	110
13	899
14	900
15	901
16	910
17	911
18	990
19	991
20	999
21	1000
22	1001
23	1009
24	1010
25	1011
26	1090
27	1091
28	1100
29	1101
30	1109
31	8989
32	8990
33	8999
34	9000
35	9001
36	9010
37	9011
38	9100
39	9101
40	9110
41	9900
42	9901
43	9909
44	9910
45	9990
46	9991
47	9999
48	10000
49	10001
50	10009
51	10010
52	10011
53	10090
54	10091
55	10099
56	10100
57	10109
58	10110
59	10900
60	10910
61	10991
62	11000

[0,1,9,10,11,90,91,99,100,101,109,110,899,900,901, 910,911,990,991,999,1000,1001,1009,1010,1011,1090, 1091,1100,1101,1109,8989,8990,8999,9000,9001,9010, 9011,9100,9101,9110,9900,9901,9909,9910,9990,9991, 9999,10000,10001,10009,10010,10011,10090,10091, 10099,10100,10109,10110,10900,10910,10991,11000]