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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 22 |
| 4 | 221 |
| 5 | 5556 |
| 6 | 352897 |
| 7 | 56909000 |
| 8 | 23456163817 |
| 9 | 24862388706622 |
| 10 | 68125408037874461 |
| 11 | 484697617517152241192 |
| 12 | 8987761653844408528516645 |
| 13 | 435751632681268773059903563592 |
| 14 | 55389930392445599773550918556967161 |
[1,2,5,22,221,5556,352897,56909000,23456163817, 24862388706622,68125408037874461, 484697617517152241192,8987761653844408528516645, 435751632681268773059903563592, 55389930392445599773550918556967161] |