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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 17 |
| 5 | 29 |
| 6 | 31 |
| 7 | 53 |
| 8 | 59 |
| 9 | 101 |
| 10 | 277 |
| 11 | 647 |
| 12 | 1061 |
| 13 | 2381 |
| 14 | 2833 |
| 15 | 3613 |
| 16 | 3853 |
| 17 | 3929 |
| 18 | 5297 |
| 19 | 7417 |
| 20 | 90217 |
| 21 | 122219 |
| 22 | 173191 |
| 23 | 256199 |
| 24 | 336353 |
| 25 | 485977 |
| 26 | 591827 |
| 27 | 1059503 |