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 | 3 |
| 2 | 29 |
| 3 | 1169 |
| 4 | 250841 |
| 5 | 318174607 |
| 6 | 2533164987353 |
| 7 | 132171590850720635 |
| 8 | 46774077148795239899357 |
| 9 | 115527764322088806347883934235 |