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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 256 |
| 3 | 4096 |
| 4 | 44742 |
| 5 | 460598 |
| 6 | 4245574 |
| 7 | 37282358 |
| 8 | 312449872 |
| 9 | 2540944329 |
| 10 | 20159382751 |
| 11 | 157057696653 |
| 12 | 1206033664639 |
| 13 | 9157807121914 |
| 14 | 68919889770321 |
| 15 | 515005090966233 |
| 16 | 3826399784437020 |
| 17 | 28297799131011777 |
| 18 | 208480992623889542 |
[16,256,4096,44742,460598,4245574,37282358, 312449872,2540944329,20159382751,157057696653, 1206033664639,9157807121914,68919889770321, 515005090966233,3826399784437020, 28297799131011777,208480992623889542] |