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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 13 |
| 3 | 6253 |
| 4 | 23313 |
| 5 | 77289 |
| 6 | 135033 |
| 7 | 349149 |
| 8 | 604585 |
| 9 | 1099741 |
| 10 | 1673881 |
| 11 | 2199301 |
| 12 | 2578197 |
| 13 | 2729905 |
[1,13,6253,23313,77289,135033,349149,604585, 1099741,1673881,2199301,2578197,2729905] |