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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 18 |
| 3 | 235 |
| 4 | 2466 |
| 5 | 23083 |
| 6 | 223567 |
| 7 | 2208945 |
| 8 | 22411843 |
| 9 | 216858412 |
| 10 | 2141041521 |
| 11 | 21294389765 |
| 12 | 209517628754 |
| 13 | 2070288232686 |
| 14 | 20420464639642 |
| 15 | 201913230471755 |
| 16 | 1993188902599209 |
| 17 | 19665745111235770 |
| 18 | 194376407794905718 |
[5,18,235,2466,23083,223567,2208945,22411843, 216858412,2141041521,21294389765,209517628754, 2070288232686,20420464639642,201913230471755, 1993188902599209,19665745111235770, 194376407794905718] |