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 | 3 |
| 3 | 7 |
| 4 | 11 |
| 5 | 13 |
| 6 | 21 |
| 7 | 21 |
| 8 | 35 |
| 9 | 43 |
| 10 | 43 |
| 11 | 61 |
| 12 | 63 |
| 13 | 77 |
| 14 | 85 |
| 15 | 91 |
| 16 | 111 |
| 17 | 119 |
| 18 | 129 |
| 19 | 147 |
| 20 | 157 |
| 21 | 171 |
| 22 | 183 |
| 23 | 185 |
| 24 | 231 |
| 25 | 245 |
| 26 | 255 |
| 27 | 255 |
| 28 | 273 |
| 29 | 301 |
| 30 | 301 |