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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 343 |
| 3 | 400 |
| 4 | 1705636 |
| 5 | 3648100 |
| 6 | 13645088 |
| 7 | 25992000 |
| 8 | 26680500 |
| 9 | 29184800 |
| 10 | 80802000 |
| 11 | 110215125 |
| 12 | 178054848 |
| 13 | 180093375 |
| 14 | 213444000 |
| 15 | 310144500 |
| 16 | 408632609 |
| 17 | 575664500 |
| 18 | 1055340196 |
| 19 | 1120504500 |
| 20 | 1476326929 |
| 21 | 1667329664 |
| 22 | 2066544500 |
[81,343,400,1705636,3648100,13645088,25992000, 26680500,29184800,80802000,110215125,178054848, 180093375,213444000,310144500,408632609,575664500, 1055340196,1120504500,1476326929,1667329664, 2066544500] |