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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 19 |
| 2 | 15251 |
| 3 | 599786069 |
| 4 | 1114769987764201 |
| 5 | 97420733208491869044199 |
| 6 | 400012422749007152825031617346281 |
| 7 | 77162215003721161199201918848868019810593999 |
[1,19,15251,599786069,1114769987764201, 97420733208491869044199, 400012422749007152825031617346281, 77162215003721161199201918848868019810593999] |