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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 128 |
| 3 | 1921 |
| 4 | 28760 |
| 5 | 431529 |
| 6 | 6475106 |
| 7 | 97158833 |
| 8 | 1457871738 |
| 9 | 21875422403 |
| 10 | 328241570548 |
| 11 | 4925277664965 |
| 12 | 73903984966452 |
| 13 | 1108932199510127 |
| 14 | 16639571244859588 |
| 15 | 249677420617443179 |
| 16 | 3746419510986492706 |
[8,128,1921,28760,431529,6475106,97158833, 1457871738,21875422403,328241570548,4925277664965, 73903984966452,1108932199510127,16639571244859588, 249677420617443179,3746419510986492706] |