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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 14 |
| 5 | 22 |
| 6 | 23 |
| 7 | 32 |
| 8 | 33 |
| 9 | 53 |
| 10 | 132 |
| 11 | 133 |
| 12 | 153 |
| 13 | 232 |
| 14 | 233 |
| 15 | 253 |
| 16 | 353 |
| 17 | 1253 |
| 18 | 1353 |
| 19 | 2253 |
| 20 | 2353 |
| 21 | 3353 |
| 22 | 14353 |
| 23 | 22353 |
| 24 | 23353 |
| 25 | 32353 |
| 26 | 33353 |
| 27 | 53353 |
[1,2,3,14,22,23,32,33,53,132,133,153,232,233,253, 353,1253,1353,2253,2353,3353,14353,22353,23353, 32353,33353,53353] |