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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 64 |
| 2 | 46656 |
| 3 | 2985984 |
| 4 | 64000000 |
| 5 | 729000000 |
| 6 | 5489031744 |
| 7 | 30840979456 |
| 8 | 139314069504 |
| 9 | 531441000000 |
| 10 | 1771561000000 |
| 11 | 5289852801024 |
| 12 | 14412774445056 |
| 13 | 36343632130624 |
| 14 | 85766121000000 |
| 15 | 191102976000000 |
| 16 | 404961208827904 |
| 17 | 820972403643456 |
| 18 | 1600135042849344 |
| 19 | 3010936384000000 |
| 20 | 5489031744000000 |
[0,64,46656,2985984,64000000,729000000,5489031744, 30840979456,139314069504,531441000000, 1771561000000,5289852801024,14412774445056, 36343632130624,85766121000000,191102976000000, 404961208827904,820972403643456,1600135042849344, 3010936384000000,5489031744000000] |