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| n | a(n) |
|---|---|
| 1 | 139 |
| 2 | 3886 |
| 3 | 540154 |
| 4 | 43640576 |
| 5 | 6578580741 |
| 6 | 713054874385 |
| 7 | 107232700247240 |
| 8 | 12938444501010386 |
| 9 | 1917660834712753905 |
[139,3886,540154,43640576,6578580741,713054874385, 107232700247240,12938444501010386, 1917660834712753905] |