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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 4 |
| 3 | 5 |
| 4 | 11 |
| 5 | 60 |
| 6 | 61 |
| 7 | 123 |
| 8 | 7564 |
| 9 | 7565 |
| 10 | 15131 |
| 11 | 114473580 |
| 12 | 114473581 |
| 13 | 228947163 |
| 14 | 26208401722874284 |
| 15 | 26208401722874285 |
| 16 | 52416803445748571 |
| 17 | 1373760641735119632984407274271020 |
| 18 | 1373760641735119632984407274271021 |
[3,4,5,11,60,61,123,7564,7565,15131,114473580, 114473581,228947163,26208401722874284, 26208401722874285,52416803445748571, 1373760641735119632984407274271020, 1373760641735119632984407274271021] |