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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 99 |
| 3 | 4768 |
| 4 | 141833 |
| 5 | 5598122 |
| 6 | 216042764 |
| 7 | 8351540397 |
| 8 | 321111082107 |
| 9 | 12356839088825 |
| 10 | 475267463574534 |
| 11 | 18301760788493413 |
| 12 | 704261042875463142 |
| 13 | 27105588968030124804 |
| 14 | 1043189030239853499999 |
| 15 | 40149431446819879902095 |
[1,99,4768,141833,5598122,216042764,8351540397, 321111082107,12356839088825,475267463574534, 18301760788493413,704261042875463142, 27105588968030124804,1043189030239853499999, 40149431446819879902095] |