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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 28 |
| 3 | 729 |
| 4 | 19376 |
| 5 | 529575 |
| 6 | 14835780 |
| 7 | 424231465 |
| 8 | 12338211520 |
| 9 | 363931754949 |
| 10 | 10862528888300 |
| 11 | 327501958094003 |
| 12 | 9959845931792784 |
| 13 | 305175084350065267 |
| 14 | 9412306255856822388 |
| 15 | 291982561878565118025 |
| 16 | 9104382992541189221120 |
[0,1,28,729,19376,529575,14835780,424231465, 12338211520,363931754949,10862528888300, 327501958094003,9959845931792784, 305175084350065267,9412306255856822388, 291982561878565118025,9104382992541189221120] |