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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 23 |
| 3 | 223 |
| 4 | 2237 |
| 5 | 22229 |
| 6 | 222247 |
| 7 | 2222239 |
| 8 | 22222223 |
| 9 | 222222227 |
| 10 | 2222222243 |
| 11 | 22222222223 |
| 12 | 222222222301 |
| 13 | 2222222222243 |
| 14 | 22222222222229 |
| 15 | 222222222222227 |
| 16 | 2222222222222281 |
| 17 | 22222222222222301 |
| 18 | 222222222222222281 |
[2,3,23,223,2237,22229,222247,2222239,22222223, 222222227,2222222243,22222222223,222222222301, 2222222222243,22222222222229,222222222222227, 2222222222222281,22222222222222301, 222222222222222281] |