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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 476 |
| 3 | 476 |
| 4 | 2766 |
| 5 | 4836 |
| 6 | 2766 |
| 7 | 15728 |
| 8 | 45914 |
| 9 | 45914 |
| 10 | 15728 |
| 11 | 89630 |
| 12 | 426086 |
| 13 | 695725 |
| 14 | 426086 |
| 15 | 89630 |
| 16 | 511044 |
| 17 | 3972556 |
| 18 | 10133550 |
| 19 | 10133550 |
| 20 | 3972556 |
| 21 | 511044 |
| 22 | 2913944 |
| 23 | 37114078 |
| 24 | 150096812 |
| 25 | 234138348 |
| 26 | 150096812 |
| 27 | 37114078 |
| 28 | 2913944 |
| 29 | 16611380 |
[81,476,476,2766,4836,2766,15728,45914,45914, 15728,89630,426086,695725,426086,89630,511044, 3972556,10133550,10133550,3972556,511044,2913944, 37114078,150096812,234138348,150096812,37114078, 2913944,16611380] |