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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 128 |
| 3 | 1575 |
| 4 | 21098 |
| 5 | 280468 |
| 6 | 3740381 |
| 7 | 49885231 |
| 8 | 665351771 |
| 9 | 8874346832 |
| 10 | 118364863862 |
| 11 | 1578735453349 |
| 12 | 21056975599629 |
| 13 | 280855308864195 |
| 14 | 3746013029750793 |
| 15 | 49963853976933385 |
| 16 | 666411644915463676 |
[8,128,1575,21098,280468,3740381,49885231, 665351771,8874346832,118364863862,1578735453349, 21056975599629,280855308864195,3746013029750793, 49963853976933385,666411644915463676] |