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| n | a(n) |
|---|---|
| 1 | 223 |
| 2 | 1606 |
| 3 | 11553 |
| 4 | 82991 |
| 5 | 596414 |
| 6 | 4285989 |
| 7 | 30799890 |
| 8 | 221334561 |
| 9 | 1590556222 |
| 10 | 11430067537 |
| 11 | 82138844381 |
| 12 | 590266825510 |
| 13 | 4241780221403 |
| 14 | 30482315247698 |
| 15 | 219052259713035 |
| 16 | 1574155115721354 |
| 17 | 11312206190476013 |
| 18 | 81291867375432163 |
[223,1606,11553,82991,596414,4285989,30799890, 221334561,1590556222,11430067537,82138844381, 590266825510,4241780221403,30482315247698, 219052259713035,1574155115721354, 11312206190476013,81291867375432163] |