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| n | a(n) |
|---|---|
| 1 | 405 |
| 2 | 7790 |
| 3 | 984150 |
| 4 | 71388971 |
| 5 | 5988724293 |
| 6 | 482858009716 |
| 7 | 39351464058085 |
| 8 | 3197707959464813 |
| 9 | 260051519640219195 |
| 10 | 21143995321557570468 |
| 11 | 1719253480434235036170 |
| 12 | 139793164967480337703364 |
[405,7790,984150,71388971,5988724293,482858009716, 39351464058085,3197707959464813, 260051519640219195,21143995321557570468, 1719253480434235036170,139793164967480337703364] |