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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 67 |
| 3 | 1080 |
| 4 | 4140 |
| 5 | 21147 |
| 6 | 794545 |
| 7 | 4213597 |
| 8 | 27644437 |
| 9 | 190899322 |
| 10 | 1382958545 |
| 11 | 93345011951 |
| 12 | 682076806159 |
| 13 | 5832742205057 |
| 14 | 51724158235372 |
| 15 | 474869816156751 |
| 16 | 4506715738447323 |
| 17 | 44152005855084346 |
| 18 | 445958869294805289 |
| 19 | 4638590332229999353 |
| 20 | 49631246523618756274 |
| 21 | 545717047936059989389 |
| 22 | 6160539404599934652455 |
[9,67,1080,4140,21147,794545,4213597,27644437, 190899322,1382958545,93345011951,682076806159, 5832742205057,51724158235372,474869816156751, 4506715738447323,44152005855084346, 445958869294805289,4638590332229999353, 49631246523618756274,545717047936059989389, 6160539404599934652455] |