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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 148 |
| 3 | 148 |
| 4 | 1977 |
| 5 | 6977 |
| 6 | 1977 |
| 7 | 27720 |
| 8 | 351482 |
| 9 | 351482 |
| 10 | 27720 |
| 11 | 393649 |
| 12 | 17864271 |
| 13 | 63734680 |
| 14 | 17864271 |
| 15 | 393649 |
| 16 | 5608216 |
| 17 | 908980864 |
| 18 | 11572169594 |
| 19 | 11572169594 |
| 20 | 908980864 |
| 21 | 5608216 |
| 22 | 79963353 |
| 23 | 46257884813 |
| 24 | 2101304030788 |
| 25 | 7497695247894 |
[13,148,148,1977,6977,1977,27720,351482,351482, 27720,393649,17864271,63734680,17864271,393649, 5608216,908980864,11572169594,11572169594, 908980864,5608216,79963353,46257884813, 2101304030788,7497695247894] |