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 | 4 |
| 4 | 10 |
| 5 | 20 |
| 6 | 51 |
| 7 | 133 |
| 8 | 359 |
| 9 | 975 |
| 10 | 2700 |
| 11 | 7506 |
| 12 | 20962 |
| 13 | 58968 |
| 14 | 166170 |