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 | 13 |
| 3 | 21 |
| 4 | 33 |
| 5 | 37 |
| 6 | 57 |
| 7 | 85 |
| 8 | 93 |
| 9 | 105 |
| 10 | 133 |
| 11 | 165 |
| 12 | 177 |
| 13 | 253 |
| 14 | 273 |
| 15 | 345 |
| 16 | 357 |
| 17 | 385 |
| 18 | 1365 |