n | a(n) |
---|---|
1 | 21 |
2 | 121 |
3 | 219 |
4 | 221 |
5 | 321 |
6 | 421 |
7 | 521 |
8 | 621 |
9 | 721 |
10 | 821 |
11 | 921 |
12 | 1021 |
13 | 1121 |
14 | 1219 |
15 | 1221 |
16 | 1321 |
17 | 1421 |
18 | 1521 |
19 | 1621 |
20 | 1721 |
21 | 1821 |
22 | 1921 |
23 | 2021 |
24 | 2199 |
25 | 2219 |
26 | 2221 |
27 | 2321 |
28 | 2421 |
29 | 2521 |
30 | 2621 |
31 | 2721 |
32 | 2821 |
33 | 2921 |
34 | 3021 |
35 | 3121 |
36 | 3219 |
37 | 3221 |
38 | 3321 |
39 | 3421 |
[21,121,219,221,321,421,521,621,721,821,921,1021, 1121,1219,1221,1321,1421,1521,1621,1721,1821,1921, 2021,2199,2219,2221,2321,2421,2521,2621,2721,2821, 2921,3021,3121,3219,3221,3321,3421] |