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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 11 |
| 3 | 21 |
| 4 | 101 |
| 5 | 121 |
| 6 | 201 |
| 7 | 221 |
| 8 | 301 |
| 9 | 321 |
| 10 | 1021 |
| 11 | 1101 |
| 12 | 1201 |
| 13 | 1221 |
| 14 | 1301 |
| 15 | 1321 |
| 16 | 2021 |
| 17 | 2121 |
| 18 | 2201 |
| 19 | 2301 |
| 20 | 2321 |
| 21 | 3001 |
| 22 | 3101 |
| 23 | 3121 |
| 24 | 3221 |
| 25 | 4001 |
| 26 | 4021 |
| 27 | 4101 |
| 28 | 4121 |
| 29 | 4201 |
| 30 | 4221 |
| 31 | 10101 |
| 32 | 10121 |
| 33 | 10221 |
| 34 | 10301 |
| 35 | 11021 |
| 36 | 11101 |
| 37 | 11201 |
| 38 | 11301 |
| 39 | 11321 |
| 40 | 12021 |
| 41 | 12121 |
| 42 | 12201 |
| 43 | 12321 |
[10,11,21,101,121,201,221,301,321,1021,1101,1201, 1221,1301,1321,2021,2121,2201,2301,2321,3001,3101, 3121,3221,4001,4021,4101,4121,4201,4221,10101, 10121,10221,10301,11021,11101,11201,11301,11321, 12021,12121,12201,12321] |