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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 332 |
| 3 | 25788 |
| 4 | 1649668 |
| 5 | 98676048 |
| 6 | 5616280768 |
| 7 | 310153746516 |
| 8 | 16801526882832 |
| 9 | 897690327775816 |
| 10 | 47468771461397680 |
| 11 | 2490387212942596588 |
[2,332,25788,1649668,98676048,5616280768, 310153746516,16801526882832,897690327775816, 47468771461397680,2490387212942596588] |