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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 25 |
| 4 | 256 |
| 5 | 3025 |
| 6 | 46656 |
| 7 | 822649 |
| 8 | 16777216 |
| 9 | 387420489 |
| 10 | 10000000000 |
| 11 | 285310881025 |
| 12 | 8916100448256 |
| 13 | 302875094536249 |
| 14 | 11112006825558016 |
| 15 | 437893889165373169 |
| 16 | 18446744073709551616 |
| 17 | 827240261832761854009 |
| 18 | 39346408075296537575424 |
| 19 | 1978419655659032909463364 |
| 20 | 104857600000000000000000000 |
[1,4,25,256,3025,46656,822649,16777216,387420489, 10000000000,285310881025,8916100448256, 302875094536249,11112006825558016, 437893889165373169,18446744073709551616, 827240261832761854009,39346408075296537575424, 1978419655659032909463364, 104857600000000000000000000] |