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 | 5 |
| 3 | 7 |
| 4 | 15 |
| 5 | 20 |
| 6 | 47 |
| 7 | 84 |
| 8 | 138 |
| 9 | 169 |
| 10 | 257 |
| 11 | 263 |
| 12 | 431 |
| 13 | 559 |
| 14 | 2939 |
| 15 | 4403 |
| 16 | 4870 |
| 17 | 5273 |