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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 121 |
| 3 | 927 |
| 4 | 8245 |
| 5 | 74329 |
| 6 | 664377 |
| 7 | 5966905 |
| 8 | 53667656 |
| 9 | 482603686 |
| 10 | 4340430649 |
| 11 | 39040203717 |
| 12 | 351150199077 |
| 13 | 3158465607310 |
| 14 | 28409347903144 |
| 15 | 255532834427292 |
| 16 | 2298435315054163 |
| 17 | 20673687740237324 |
| 18 | 185953195378108520 |
[8,121,927,8245,74329,664377,5966905,53667656, 482603686,4340430649,39040203717,351150199077, 3158465607310,28409347903144,255532834427292, 2298435315054163,20673687740237324, 185953195378108520] |