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| n | a(n) |
|---|---|
| 1 | 63 |
| 2 | 665 |
| 3 | 3151 |
| 4 | 9705 |
| 5 | 23351 |
| 6 | 47953 |
| 7 | 88215 |
| 8 | 149681 |
| 9 | 238735 |
| 10 | 362601 |
| 11 | 529343 |
| 12 | 747865 |
| 13 | 1027911 |
| 14 | 1380065 |
| 15 | 1815751 |
| 16 | 2347233 |
| 17 | 2987615 |
| 18 | 3750841 |
| 19 | 4651695 |
| 20 | 5705801 |
| 21 | 6929623 |
| 22 | 8340465 |
| 23 | 9956471 |
| 24 | 11796625 |
| 25 | 13880751 |
| 26 | 16229513 |
| 27 | 18864415 |
| 28 | 21807801 |
| 29 | 25082855 |
[63,665,3151,9705,23351,47953,88215,149681,238735, 362601,529343,747865,1027911,1380065,1815751, 2347233,2987615,3750841,4651695,5705801,6929623, 8340465,9956471,11796625,13880751,16229513, 18864415,21807801,25082855] |