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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 123 |
| 3 | 236 |
| 4 | 1676 |
| 5 | 11111 |
| 6 | 90728 |
| 7 | 686376 |
| 8 | 5320294 |
| 9 | 42575026 |
| 10 | 345713805 |
| 11 | 2801331069 |
| 12 | 22819881078 |
| 13 | 186805008216 |
| 14 | 1528961515269 |
| 15 | 12526736579284 |
| 16 | 102761508859349 |
| 17 | 843215927212293 |
| 18 | 6920803923723062 |
| 19 | 56822359222413226 |
| 20 | 466601882566586351 |
[1,123,236,1676,11111,90728,686376,5320294, 42575026,345713805,2801331069,22819881078, 186805008216,1528961515269,12526736579284, 102761508859349,843215927212293,6920803923723062, 56822359222413226,466601882566586351] |