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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 432 |
| 3 | 343 |
| 4 | 2128 |
| 5 | 11731 |
| 6 | 55039 |
| 7 | 311014 |
| 8 | 1742187 |
| 9 | 9652212 |
| 10 | 54215925 |
| 11 | 304136859 |
| 12 | 1705204672 |
| 13 | 9572981971 |
| 14 | 53722180818 |
| 15 | 301526832227 |
| 16 | 1692432742507 |
| 17 | 9499376400246 |
| 18 | 53319042252526 |
| 19 | 299275626808768 |
| 20 | 1679809896380902 |
[64,432,343,2128,11731,55039,311014,1742187, 9652212,54215925,304136859,1705204672,9572981971, 53722180818,301526832227,1692432742507, 9499376400246,53319042252526,299275626808768, 1679809896380902] |