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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 2048 |
| 3 | 2097152 |
| 4 | 17179869184 |
| 5 | 1125899906842624 |
| 6 | 590295810358705651712 |
| 7 | 2475880078570760549798248448 |
| 8 | 83076749736557242056487941267521536 |
| 9 | 22300745198530623141535718272648361505980416 |
[1,16,2048,2097152,17179869184,1125899906842624, 590295810358705651712, 2475880078570760549798248448, 83076749736557242056487941267521536, 22300745198530623141535718272648361505980416] |