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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 13 |
| 6 | 22 |
| 7 | 25 |
| 8 | 28 |
| 9 | 38 |
| 10 | 67 |
| 11 | 142 |
| 12 | 284 |
| 13 | 295 |
| 14 | 380 |
| 15 | 397 |
| 16 | 1217 |
| 17 | 1640 |
| 18 | 2885 |
| 19 | 3286 |
| 20 | 7735 |
| 21 | 29306 |