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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 71 |
| 3 | 281 |
| 4 | 4523 |
| 5 | 74713 |
| 6 | 904523 |
| 7 | 6028747 |
| 8 | 72407663 |
| 9 | 360287471 |
| 10 | 7427466391 |
| 11 | 75724709369 |
| 12 | 749669676277 |
| 13 | 8284590452353 |
| 14 | 99959574966967 |
| 15 | 724709369995957 |
| 16 | 2470936999595749 |
| 17 | 28459045235360287 |
| 18 | 571382178525166427 |
[7,71,281,4523,74713,904523,6028747,72407663, 360287471,7427466391,75724709369,749669676277, 8284590452353,99959574966967,724709369995957, 2470936999595749,28459045235360287, 571382178525166427] |