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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 5 |
| 6 | 11 |
| 7 | 21 |
| 8 | 32 |
| 9 | 37 |
| 10 | 46 |
| 11 | 48 |
| 12 | 49 |
| 13 | 53 |
| 14 | 89 |
| 15 | 99 |
| 16 | 142 |
| 17 | 147 |
| 18 | 273 |
| 19 | 297 |
| 20 | 345 |
| 21 | 515 |
| 22 | 550 |
| 23 | 573 |