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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 17 |
| 3 | 43 |
| 4 | 89 |
| 5 | 593 |
| 6 | 2213 |
| 7 | 9277 |
| 8 | 39929 |
| 9 | 1336337 |
| 10 | 2986609 |
| 11 | 12136609 |
| 12 | 226981081 |
| 13 | 309601747141 |
| 14 | 576013438873664081 |
| 15 | 576013438873858481 |
| 16 | 4622463127346550949 |
| 17 | 43784599166913148633 |
| 18 | 43784599166913343033 |
| 19 | 43784599169860444073 |
| 20 | 43784605671499215833 |
| 21 | 1488418770664783966373 |
[2,17,43,89,593,2213,9277,39929,1336337,2986609, 12136609,226981081,309601747141, 576013438873664081,576013438873858481, 4622463127346550949,43784599166913148633, 43784599166913343033,43784599169860444073, 43784605671499215833,1488418770664783966373] |