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| n | a(n) |
|---|---|
| 0 | 21 |
| 1 | 442 |
| 2 | 18585 |
| 3 | 390727 |
| 4 | 16429119 |
| 5 | 345402226 |
| 6 | 14523322611 |
| 7 | 305335177057 |
| 8 | 12838600759005 |
| 9 | 269915951116162 |
| 10 | 11349308547637809 |
| 11 | 238605395451510151 |
| 12 | 10032775917511064151 |
| 13 | 210926899663183857322 |
| 14 | 8868962561771233071675 |
[21,442,18585,390727,16429119,345402226, 14523322611,305335177057,12838600759005, 269915951116162,11349308547637809, 238605395451510151,10032775917511064151, 210926899663183857322,8868962561771233071675] |