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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 18 |
| 2 | 194 |
| 3 | 2066 |
| 4 | 22018 |
| 5 | 234642 |
| 6 | 2500546 |
| 7 | 26647954 |
| 8 | 283983362 |
| 9 | 3026369298 |
| 10 | 32251576514 |
| 11 | 343700350226 |
| 12 | 3662764537858 |
| 13 | 39033547830162 |
| 14 | 415974830066626 |
| 15 | 4432983135477394 |
| 16 | 47241655165240322 |
| 17 | 503447433600744978 |
| 18 | 5365165922164132034 |
| 19 | 57175791256846535186 |
[2,18,194,2066,22018,234642,2500546,26647954, 283983362,3026369298,32251576514,343700350226, 3662764537858,39033547830162,415974830066626, 4432983135477394,47241655165240322, 503447433600744978,5365165922164132034, 57175791256846535186] |