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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 17 |
| 3 | 31 |
| 4 | 149 |
| 5 | 11587 |
| 6 | 49429 |
| 7 | 15701951 |
| 8 | 21304973 |
| 9 | 3846277 |
| 10 | 251375273 |
| 11 | 5449276159 |
| 12 | 296410704409 |
| 13 | 750391353973 |
| 14 | 205109154121 |
| 15 | 875366796349 |
| 16 | 72210869205443 |
| 17 | 139884035510017 |
| 18 | 79014319582741129 |
| 19 | 94461530406533783 |
| 20 | 2562508045902551 |
[2,17,31,149,11587,49429,15701951,21304973, 3846277,251375273,5449276159,296410704409, 750391353973,205109154121,875366796349, 72210869205443,139884035510017,79014319582741129, 94461530406533783,2562508045902551] |