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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 256 |
| 3 | 4096 |
| 4 | 65536 |
| 5 | 1048576 |
| 6 | 16777216 |
| 7 | 268435456 |
| 8 | 4294967296 |
| 9 | 68701991383 |
[16,256,4096,65536,1048576,16777216,268435456, 4294967296,68701991383] |