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| n | a(n) |
|---|---|
| 2 | 126 |
| 3 | 126 |
| 4 | 1778 |
| 5 | 6510 |
| 6 | 23622 |
| 7 | 510 |
| 8 | 507842 |
| 9 | 1523526 |
| 10 | 8388606 |
| 11 | 4194302 |
| 12 | 597870 |
| 13 | 35791394 |
| 14 | 21691754 |
| 15 | 2046 |
| 16 | 511305630 |
| 17 | 45678505642 |
| 18 | 51539607546 |
| 19 | 640638112422 |
| 20 | 2748779069430 |
| 21 | 25563645345606 |
| 22 | 46912496118442 |
| 23 | 80418967640942 |
[126,126,1778,6510,23622,510,507842,1523526, 8388606,4194302,597870,35791394,21691754,2046, 511305630,45678505642,51539607546,640638112422, 2748779069430,25563645345606,46912496118442, 80418967640942] |