n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 10 |
5 | 20 |
6 | 21 |
7 | 101 |
8 | 102 |
9 | 201 |
10 | 202 |
11 | 212 |
12 | 1010 |
13 | 1020 |
14 | 1021 |
15 | 2010 |
16 | 2020 |
17 | 2021 |
18 | 2120 |
19 | 2121 |
20 | 10101 |
21 | 10102 |
22 | 10201 |
23 | 10202 |
24 | 10212 |
25 | 20101 |
26 | 20102 |
27 | 20201 |
28 | 20202 |
29 | 20212 |
30 | 21201 |
31 | 21202 |
32 | 21212 |
33 | 101010 |
34 | 101020 |
35 | 101021 |
36 | 102010 |
37 | 102020 |
38 | 102021 |
39 | 102120 |
40 | 102121 |
[0,1,2,10,20,21,101,102,201,202,212,1010,1020, 1021,2010,2020,2021,2120,2121,10101,10102,10201, 10202,10212,20101,20102,20201,20202,20212,21201, 21202,21212,101010,101020,101021,102010,102020, 102021,102120,102121] |