This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| 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 |