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 | 2801 |
| 2 | 43 |
| 3 | 16148168401 |
| 4 | 117307 |
| 5 | 11898664849 |
| 6 | 13564461457 |
| 7 | 6568801 |
| 8 | 29078814248401 |
| 9 | 13841169553 |
| 10 | 3421093417510114543 |
| 11 | 33232924804801 |
| 12 | 79787519018560501 |
| 13 | 1628413557556843 |
| 14 | 5457586804596062091175455674392801 |
| 15 | 402488219476647465854701 |