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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 27 |
| 4 | 16 |
| 5 | 3125 |
| 6 | 93312 |
| 7 | 823543 |
| 8 | 4096 |
| 9 | 729 |
| 10 | 20000000000 |
| 11 | 285311670611 |
| 12 | 8916103434240 |
| 13 | 302875106592253 |
| 14 | 22224013651116032 |
| 15 | 875787780761718750 |
| 16 | 4294967296 |
| 17 | 827240261886336764177 |
| 18 | 39346408075296571587648 |
| 19 | 1978419655660313589123979 |
| 20 | 104857600000010240000000000 |
[0,4,27,16,3125,93312,823543,4096,729,20000000000, 285311670611,8916103434240,302875106592253, 22224013651116032,875787780761718750,4294967296, 827240261886336764177,39346408075296571587648, 1978419655660313589123979, 104857600000010240000000000] |