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 | 19 |
| 3 | 349 |
| 4 | 2909 |
| 5 | 15377 |
| 6 | 128983 |
| 7 | 1319411 |
| 8 | 17797519 |
| 9 | 94097539 |
| 10 | 6927837559 |
| 11 | 48486712787 |
| 12 | 968068681519 |
| 13 | 1472840004019 |
| 14 | 129001208165719 |