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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 313 |
| 3 | 53135 |
| 4 | 7531357 |
| 5 | 975313579 |
| 6 | 1197531357911 |
| 7 | 13119753135791113 |
| 8 | 151311975313579111315 |
| 9 | 1715131197531357911131517 |
| 10 | 19171513119753135791113151719 |
| 11 | 211917151311975313579111315171921 |
| 12 | 2321191715131197531357911131517192123 |
[1,313,53135,7531357,975313579,1197531357911, 13119753135791113,151311975313579111315, 1715131197531357911131517, 19171513119753135791113151719, 211917151311975313579111315171921, 2321191715131197531357911131517192123] |