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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 147 |
| 3 | 147 |
| 4 | 1041 |
| 5 | 2553 |
| 6 | 1041 |
| 7 | 10231 |
| 8 | 55857 |
| 9 | 55857 |
| 10 | 10231 |
| 11 | 76355 |
| 12 | 1389521 |
| 13 | 3631179 |
| 14 | 1389521 |
| 15 | 76355 |
| 16 | 639129 |
| 17 | 33587307 |
| 18 | 263234281 |
| 19 | 263234281 |
| 20 | 33587307 |
| 21 | 639129 |
| 22 | 5262685 |
| 23 | 829488619 |
| 24 | 19216153673 |
| 25 | 55212617129 |
| 26 | 19216153673 |
| 27 | 829488619 |
| 28 | 5262685 |
[19,147,147,1041,2553,1041,10231,55857,55857, 10231,76355,1389521,3631179,1389521,76355,639129, 33587307,263234281,263234281,33587307,639129, 5262685,829488619,19216153673,55212617129, 19216153673,829488619,5262685] |