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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 152 |
| 4 | 3594 |
| 5 | 96105 |
| 6 | 2734356 |
| 7 | 81126946 |
| 8 | 2480378897 |
| 9 | 77597683206 |
| 10 | 2472038270424 |
[1,8,152,3594,96105,2734356,81126946,2480378897, 77597683206,2472038270424] |