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 | 5 |
| 2 | 7 |
| 3 | 17 |
| 4 | 25 |
| 5 | 43 |
| 6 | 61 |
| 7 | 69 |
| 8 | 73 |
| 9 | 105 |
| 10 | 111 |
| 11 | 117 |
| 12 | 123 |
| 13 | 135 |
| 14 | 141 |
| 15 | 171 |
| 16 | 219 |
| 17 | 231 |
| 18 | 241 |
| 19 | 309 |
| 20 | 321 |
| 21 | 543 |
| 22 | 739 |
| 23 | 795 |
| 24 | 833 |
| 25 | 975 |