n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 13 |
4 | 31 |
5 | 113 |
6 | 131 |
7 | 133 |
8 | 311 |
9 | 313 |
10 | 331 |
11 | 1113 |
12 | 1131 |
13 | 1133 |
14 | 1311 |
15 | 1331 |
16 | 1333 |
17 | 3111 |
18 | 3113 |
19 | 3133 |
20 | 3311 |
21 | 3313 |
22 | 3331 |
23 | 11113 |
24 | 11131 |
25 | 11133 |
26 | 11311 |
27 | 11313 |
28 | 11331 |
29 | 11333 |
30 | 13111 |
31 | 13113 |
32 | 13131 |
33 | 13133 |
34 | 13311 |
35 | 13313 |
36 | 13331 |
37 | 13333 |
38 | 31111 |
39 | 31113 |
40 | 31131 |
41 | 31133 |
42 | 31311 |
43 | 31313 |
44 | 31331 |
45 | 31333 |
46 | 33111 |
47 | 33113 |
48 | 33131 |
49 | 33133 |
50 | 33311 |
51 | 33313 |
52 | 33331 |
[1,3,13,31,113,131,133,311,313,331,1113,1131,1133, 1311,1331,1333,3111,3113,3133,3311,3313,3331, 11113,11131,11133,11311,11313,11331,11333,13111, 13113,13131,13133,13311,13313,13331,13333,31111, 31113,31131,31133,31311,31313,31331,31333,33111, 33113,33131,33133,33311,33313,33331] |