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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 474 |
| 3 | 474 |
| 4 | 2797 |
| 5 | 4170 |
| 6 | 2797 |
| 7 | 16360 |
| 8 | 36260 |
| 9 | 36260 |
| 10 | 16360 |
| 11 | 95961 |
| 12 | 315666 |
| 13 | 471689 |
| 14 | 315666 |
| 15 | 95961 |
| 16 | 562284 |
| 17 | 2750070 |
| 18 | 6140316 |
| 19 | 6140316 |
| 20 | 2750070 |
| 21 | 562284 |
| 22 | 3296708 |
| 23 | 24023328 |
| 24 | 80610053 |
| 25 | 121728522 |
| 26 | 80610053 |
| 27 | 24023328 |
| 28 | 3296708 |
| 29 | 19317952 |
[81,474,474,2797,4170,2797,16360,36260,36260, 16360,95961,315666,471689,315666,95961,562284, 2750070,6140316,6140316,2750070,562284,3296708, 24023328,80610053,121728522,80610053,24023328, 3296708,19317952] |