| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 100 |
| 3 | 121 |
| 4 | 10000 |
| 5 | 10201 |
| 6 | 12100 |
| 7 | 12321 |
| 8 | 1000000 |
| 9 | 1002001 |
| 10 | 1020100 |
| 11 | 1022121 |
| 12 | 1210000 |
| 13 | 1212201 |
| 14 | 1232100 |
| 15 | 1234321 |
| 16 | 100000000 |
| 17 | 100020001 |
| 18 | 100200100 |
| 19 | 100220121 |
| 20 | 102010000 |
| 21 | 102030201 |
| 22 | 102212100 |
| 23 | 102232321 |
| 24 | 121000000 |
| 25 | 121022001 |
[0,1,100,121,10000,10201,12100,12321,1000000, 1002001,1020100,1022121,1210000,1212201,1232100, 1234321,100000000,100020001,100200100,100220121, 102010000,102030201,102212100,102232321,121000000, 121022001] |