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| n | a(n) |
|---|---|
| 1 | 372 |
| 2 | 1578 |
| 3 | 16600 |
| 4 | 189430 |
| 5 | 2077950 |
| 6 | 26986182 |
| 7 | 326181996 |
| 8 | 4661555368 |
| 9 | 62462952854 |
[372,1578,16600,189430,2077950,26986182,326181996, 4661555368,62462952854] |