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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 100 |
| 3 | 3364 |
| 4 | 114244 |
| 5 | 3880900 |
| 6 | 131836324 |
| 7 | 4478554084 |
| 8 | 152139002500 |
| 9 | 5168247530884 |
| 10 | 175568277047524 |
| 11 | 5964153172084900 |
| 12 | 202605639573839044 |
| 13 | 6882627592338442564 |
| 14 | 233806732499933208100 |
| 15 | 7942546277405390632804 |
| 16 | 269812766699283348307204 |
| 17 | 9165691521498228451812100 |
| 18 | 311363698964240484013304164 |
[4,100,3364,114244,3880900,131836324,4478554084, 152139002500,5168247530884,175568277047524, 5964153172084900,202605639573839044, 6882627592338442564,233806732499933208100, 7942546277405390632804,269812766699283348307204, 9165691521498228451812100, 311363698964240484013304164] |