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| n | a(n) |
|---|---|
| 1 | 16777216 |
| 2 | 4458050224128 |
| 3 | 1259085058409489202413568 |
| 4 | 15738563230118615030169600000000000000000000 |
| 5 | 46496637333593157266125580467610571799579852800000000000000000000 |
[16777216,4458050224128,1259085058409489202413568, 15738563230118615030169600000000000000000000, 46496637333593157266125580467610571799579852800000\ 000000000000000] |