n | a(n) |
---|---|
1 | 21 |
2 | 2121 |
3 | 212121 |
4 | 21212121 |
5 | 2121212121 |
6 | 212121212121 |
7 | 21212121212121 |
8 | 2121212121212121 |
9 | 212121212121212121 |
10 | 21212121212121212121 |
11 | 2121212121212121212121 |
12 | 212121212121212121212121 |
13 | 21212121212121212121212121 |
14 | 2121212121212121212121212121 |
[21,2121,212121,21212121,2121212121,212121212121, 21212121212121,2121212121212121, 212121212121212121,21212121212121212121, 2121212121212121212121,212121212121212121212121, 21212121212121212121212121, 2121212121212121212121212121] |