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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 8 |
| 3 | 27 |
| 4 | 125 |
| 5 | 343 |
| 6 | 1331 |
| 7 | 3375 |
| 8 | 10648 |
| 9 | 27000 |
| 10 | 74088 |
| 11 | 175616 |
| 12 | 456533 |
| 13 | 1030301 |
| 14 | 2460375 |
| 15 | 5451776 |
| 16 | 12326391 |
| 17 | 26198073 |
| 18 | 57066625 |
| 19 | 117649000 |
| 20 | 246491883 |
| 21 | 496793088 |
| 22 | 1006012008 |
| 23 | 1976656375 |
| 24 | 3906984375 |
| 25 | 7506509912 |
| 26 | 14455457856 |
[1,1,8,27,125,343,1331,3375,10648,27000,74088, 175616,456533,1030301,2460375,5451776,12326391, 26198073,57066625,117649000,246491883,496793088, 1006012008,1976656375,3906984375,7506509912, 14455457856] |