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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 474 |
| 3 | 474 |
| 4 | 2796 |
| 5 | 4176 |
| 6 | 2796 |
| 7 | 16588 |
| 8 | 37018 |
| 9 | 37018 |
| 10 | 16588 |
| 11 | 98368 |
| 12 | 334180 |
| 13 | 499072 |
| 14 | 334180 |
| 15 | 98368 |
| 16 | 582304 |
| 17 | 2988228 |
| 18 | 6889628 |
| 19 | 6889628 |
| 20 | 2988228 |
| 21 | 582304 |
| 22 | 3448740 |
| 23 | 26755684 |
| 24 | 93754871 |
| 25 | 148743254 |
| 26 | 93754871 |
| 27 | 26755684 |
| 28 | 3448740 |
| 29 | 20433016 |
[81,474,474,2796,4176,2796,16588,37018,37018, 16588,98368,334180,499072,334180,98368,582304, 2988228,6889628,6889628,2988228,582304,3448740, 26755684,93754871,148743254,93754871,26755684, 3448740,20433016] |