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 | 2 |
| 2 | 3 |
| 3 | 3 |
| 4 | 5 |
| 5 | 6 |
| 6 | 14 |
| 7 | 28 |
| 8 | 352 |
| 9 | 18574 |
| 10 | 44518346 |
| 11 | 400826881311158 |
| 12 | 25342673472297507115832358714 |
| 13 | 62130292590921086469117151395751018383242940308998211770 |