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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 70 |
| 3 | 720 |
| 4 | 7102 |
| 5 | 70780 |
| 6 | 704537 |
| 7 | 7026559 |
| 8 | 70122424 |
| 9 | 700184485 |
| 10 | 6993568566 |
| 11 | 69870544960 |
| 12 | 698175242376 |
[7,70,720,7102,70780,704537,7026559,70122424, 700184485,6993568566,69870544960,698175242376] |