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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 86 |
| 3 | 1437 |
| 4 | 6654 |
| 5 | 81917 |
| 6 | 827389 |
| 7 | 17956860 |
| 8 | 157286397 |
| 9 | 1434451965 |
| 10 | 12884901885 |
| 11 | 114353504253 |
| 12 | 1005022347261 |
| 13 | 8761733283837 |
| 14 | 166026255794172 |
| 15 | 1337006139375613 |
| 16 | 11434920928870397 |
| 17 | 97390341941886973 |
| 18 | 1799188051134513148 |
| 19 | 14231374822490767357 |
| 20 | 119903836479112085501 |
[8,86,1437,6654,81917,827389,17956860,157286397, 1434451965,12884901885,114353504253,1005022347261, 8761733283837,166026255794172,1337006139375613, 11434920928870397,97390341941886973, 1799188051134513148,14231374822490767357, 119903836479112085501] |