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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 256 |
| 3 | 3721 |
| 4 | 53824 |
| 5 | 777924 |
| 6 | 11242609 |
| 7 | 162486009 |
| 8 | 2348371600 |
| 9 | 33940324441 |
| 10 | 490529342884 |
| 11 | 7089470711236 |
| 12 | 102461949277801 |
| 13 | 1480851163185241 |
| 14 | 21402288176353681 |
| 15 | 309320714104227225 |
| 16 | 4470517516089946896 |
[16,256,3721,53824,777924,11242609,162486009, 2348371600,33940324441,490529342884,7089470711236, 102461949277801,1480851163185241, 21402288176353681,309320714104227225, 4470517516089946896] |