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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 470 |
| 3 | 470 |
| 4 | 2180 |
| 5 | 3279 |
| 6 | 2180 |
| 7 | 9623 |
| 8 | 25589 |
| 9 | 26783 |
| 10 | 9623 |
| 11 | 42669 |
| 12 | 229652 |
| 13 | 423141 |
| 14 | 238639 |
| 15 | 42669 |
| 16 | 192393 |
| 17 | 2128339 |
| 18 | 6880359 |
| 19 | 6683795 |
| 20 | 2182689 |
| 21 | 192393 |
| 22 | 876277 |
| 23 | 19879926 |
| 24 | 109896298 |
| 25 | 199339608 |
| 26 | 106821947 |
| 27 | 20251190 |
| 28 | 876277 |
| 29 | 4010555 |
[81,470,470,2180,3279,2180,9623,25589,26783,9623, 42669,229652,423141,238639,42669,192393,2128339, 6880359,6683795,2182689,192393,876277,19879926, 109896298,199339608,106821947,20251190,876277, 4010555] |