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| n | a(n) |
|---|---|
| 6 | 1428 |
| 7 | 122094 |
| 8 | 6577494 |
| 9 | 288152280 |
| 10 | 11263151718 |
| 11 | 410775452736 |
| 12 | 14329297278912 |
| 13 | 485304167135463 |
| 14 | 16110681501126303 |
| 15 | 527563895500327686 |
| 16 | 17115058041339933282 |
| 17 | 551744934193726332360 |
| 18 | 17712851478876415128930 |
| 19 | 567151641983253355425936 |
| 20 | 18132410018268844312487352 |
[1428,122094,6577494,288152280,11263151718, 410775452736,14329297278912,485304167135463, 16110681501126303,527563895500327686, 17115058041339933282,551744934193726332360, 17712851478876415128930,567151641983253355425936, 18132410018268844312487352] |