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| n | a(n) |
|---|---|
| 1 | 512 |
| 2 | 2992 |
| 3 | 16544 |
| 4 | 82064 |
| 5 | 423232 |
| 6 | 2154496 |
| 7 | 11244672 |
| 8 | 58351744 |
| 9 | 305405312 |
| 10 | 1594118656 |
| 11 | 8346515200 |
| 12 | 43652413696 |
| 13 | 228566467584 |
| 14 | 1196268052480 |
| 15 | 6263749533696 |
| 16 | 32791986405376 |
| 17 | 171701217935360 |
| 18 | 898982481903616 |
[512,2992,16544,82064,423232,2154496,11244672, 58351744,305405312,1594118656,8346515200, 43652413696,228566467584,1196268052480, 6263749533696,32791986405376,171701217935360, 898982481903616] |