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| n | a(n) |
|---|---|
| 0 | 5 |
| 1 | 17 |
| 2 | 137 |
| 3 | 2141 |
| 4 | 55987 |
| 5 | 2191523 |
| 6 | 119117233 |
| 7 | 8524439041 |
| 8 | 772233895679 |
| 9 | 85935374340821 |
| 10 | 11472892288974913 |
| 11 | 1802994904127155369 |
| 12 | 328370182285306077149 |
| 13 | 68412255688529875841713 |
| 14 | 16126185570212623152792407 |
| 15 | 4260622333455392391536790721 |
[5,17,137,2141,55987,2191523,119117233,8524439041, 772233895679,85935374340821,11472892288974913, 1802994904127155369,328370182285306077149, 68412255688529875841713, 16126185570212623152792407, 4260622333455392391536790721] |