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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 268435455 |
| 3 | 11438127792025 |
| 4 | 11998160744311570 |
| 5 | 1540200411172850701 |
| 6 | 49628317055962639176 |
| 7 | 588469772213874823272 |
| 8 | 3224318613979279184316 |
| 9 | 9452962848327254398506 |
| 10 | 16392038075086211019625 |
[1,268435455,11438127792025,11998160744311570, 1540200411172850701,49628317055962639176, 588469772213874823272,3224318613979279184316, 9452962848327254398506,16392038075086211019625] |