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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 16 |
| 3 | 264 |
| 4 | 15226 |
| 5 | 2530461 |
| 6 | 1119189256 |
| 7 | 1496646288297 |
| 8 | 5725555721739395 |
| 9 | 62058786307229208212 |
| 10 | 1952915013418224842868823 |
| 11 | 176329484983538571638638096503 |
[2,16,264,15226,2530461,1119189256,1496646288297, 5725555721739395,62058786307229208212, 1952915013418224842868823, 176329484983538571638638096503] |