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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 14 |
| 3 | 158 |
| 4 | 2486 |
| 5 | 50222 |
| 6 | 1239254 |
| 7 | 36126638 |
| 8 | 1214933846 |
| 9 | 46299580142 |
| 10 | 1971815255894 |
| 11 | 92809525295918 |
| 12 | 4784166929982806 |
| 13 | 268050260650705262 |
| 14 | 16219498558371118934 |
| 15 | 1054102762745609325998 |
| 16 | 73229184033780135425366 |
| 17 | 5415407651703010175897582 |
[1,2,14,158,2486,50222,1239254,36126638, 1214933846,46299580142,1971815255894, 92809525295918,4784166929982806, 268050260650705262,16219498558371118934, 1054102762745609325998,73229184033780135425366, 5415407651703010175897582] |