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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 32 |
| 4 | 314 |
| 5 | 5328 |
| 6 | 141832 |
| 7 | 6811777 |
| 8 | 564010260 |
| 9 | 79061881217 |
| 10 | 19181583464422 |
| 11 | 8010187646338006 |
| 12 | 5733911909201520816 |
| 13 | 7059956003044566892312 |
[1,2,8,32,314,5328,141832,6811777,564010260, 79061881217,19181583464422,8010187646338006, 5733911909201520816,7059956003044566892312] |