| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 4362327818240 |
| 3 | 19265181532031090042534736325278852710400 |
| 4 | 830325323503973129435791248069702287019820905338483131168940909920954227594481411031040 |
[1,16,4362327818240, 19265181532031090042534736325278852710400, 83032532350397312943579124806970228701982090533848\ 3131168940909920954227594481411031040] |