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A008716
as a simple table
n
a(n)
0
10
1
11
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
19
10
21
11
23
12
25
13
31
14
34
15
103
16
201
17
10011
18
1111111111111111111
[10,11,12,13,14,15,16,17,18,19,21,23,25,31,34,103, 201,10011,1111111111111111111]