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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 23 |
| 3 | 223 |
| 4 | 31223 |
| 5 | 231223 |
| 6 | 31231223 |
| 7 | 2931231223 |
| 8 | 372931231223 |
| 9 | 17372931231223 |
| 10 | 1317372931231223 |
| 11 | 1971317372931231223 |
| 12 | 1571971317372931231223 |
| 13 | 891571971317372931231223 |
| 14 | 79891571971317372931231223 |
| 15 | 25179891571971317372931231223 |
| 16 | 4325179891571971317372931231223 |
[3,23,223,31223,231223,31231223,2931231223, 372931231223,17372931231223,1317372931231223, 1971317372931231223,1571971317372931231223, 891571971317372931231223, 79891571971317372931231223, 25179891571971317372931231223, 4325179891571971317372931231223] |