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 | 81 |
| 3 | 5929 |
| 4 | 2307361 |
| 5 | 168662169 |
| 6 | 12328771225 |
| 7 | 4797839017609 |
| 8 | 350709705290025 |
| 9 | 25635978392186449 |
| 10 | 9976444135331412025 |
| 11 | 729252434211108535809 |
| 12 | 53306479301521270428241 |
| 13 | 20744638830126197732344369 |
| 14 | 1516379800105728357531817761 |
| 15 | 110843467413344235941816109721 |