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) |
|---|---|
| 0 | 2 |
| 1 | 4 |
| 2 | 5 |
| 3 | 9 |
| 4 | 8 |
| 5 | 17 |
| 6 | 13 |
| 7 | 52 |
| 8 | 16 |
| 9 | 40 |
| 10 | 36 |
| 11 | 32 |
| 12 | 62 |
| 13 | 88 |
| 14 | 96 |
| 15 | 144 |
| 16 | 112 |
| 17 | 221 |
| 18 | 256 |
| 19 | 208 |
| 20 | 400 |
| 21 | 192 |