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| n | a(n) |
|---|---|
| 1 | 57 |
| 2 | 4065 |
| 3 | 262017 |
| 4 | 16776705 |
| 5 | 1073678481 |
| 6 | 68715299265 |
| 7 | 4397778640641 |
| 8 | 281457830657025 |
| 9 | 18013301044272297 |
| 10 | 1152851258815826049 |
| 11 | 73782480049026835329 |
| 12 | 4722078690155327132673 |
| 13 | 302213034059098425848289 |
[57,4065,262017,16776705,1073678481,68715299265, 4397778640641,281457830657025,18013301044272297, 1152851258815826049,73782480049026835329, 4722078690155327132673,302213034059098425848289] |