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| n | a(n) |
|---|---|
| 1 | 40 |
| 2 | 872 |
| 3 | 21955 |
| 4 | 590305 |
| 5 | 16381510 |
| 6 | 469255626 |
| 7 | 13747683580 |
| 8 | 414063800414 |
| 9 | 12788596731195 |
[40,872,21955,590305,16381510,469255626, 13747683580,414063800414,12788596731195] |