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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 19 |
| 4 | 511 |
| 5 | 224138 |
| 6 | 60658204540 |
| 7 | 203857858414658884506671 |
| 8 | 65699957103246706854223474912465037343245580906 |
| 9 | 3942313430901049708832516976840058495554562175116278047675351101544028510870033057494673090034 |
[2,5,19,511,224138,60658204540, 203857858414658884506671, 65699957103246706854223474912465037343245580906, 39423134309010497088325169768400584955545621751162\ 78047675351101544028510870033057494673090034] |