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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 158 |
| 3 | 66336 |
| 4 | 122544034314 |
| 5 | 3438726436264160394888822 |
| 6 | 22703637642460032506699838997723739937009913804573344 |
[13,158,66336,122544034314, 3438726436264160394888822, 22703637642460032506699838997723739937009913804573\ 344] |