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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 64 |
| 4 | 4096 |
| 5 | 1048576 |
| 6 | 1073741824 |
| 7 | 4398046511104 |
| 8 | 72057594037927936 |
| 9 | 1989505896802466922496 |
| 10 | 164384949539438492410445824 |
| 11 | 47902612878717208996830483841024 |
[1,1,4,64,4096,1048576,1073741824,4398046511104, 72057594037927936,1989505896802466922496, 164384949539438492410445824, 47902612878717208996830483841024] |