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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 107 |
| 3 | 981 |
| 4 | 8705 |
| 5 | 75763 |
| 6 | 651547 |
| 7 | 5560797 |
| 8 | 47228449 |
| 9 | 399840827 |
| 10 | 3378034475 |
| 11 | 28499963781 |
| 12 | 240231872609 |
| 13 | 2023747918819 |
| 14 | 17041572850843 |
| 15 | 143465867727309 |
| 16 | 1207568224192705 |
| 17 | 10163059355514347 |
| 18 | 85527124440143723 |
[1,11,107,981,8705,75763,651547,5560797,47228449, 399840827,3378034475,28499963781,240231872609, 2023747918819,17041572850843,143465867727309, 1207568224192705,10163059355514347, 85527124440143723] |