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| n | a(n) |
|---|---|
| 0 | 324 |
| 1 | 1889568 |
| 2 | 11019960576 |
| 3 | 64268410079232 |
| 4 | 374813367582081024 |
| 5 | 2185911559738696531968 |
| 6 | 12748236216396078174437376 |
| 7 | 74347713614021927913318776832 |
| 8 | 433595865796975883590475106484224 |
[324,1889568,11019960576,64268410079232, 374813367582081024,2185911559738696531968, 12748236216396078174437376, 74347713614021927913318776832, 433595865796975883590475106484224] |