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 | 3 |
| 2 | 11 |
| 3 | 29 |
| 4 | 53 |
| 5 | 58 |
| 6 | 59 |
| 7 | 67 |
| 8 | 101 |
| 9 | 109 |
| 10 | 131 |
| 11 | 149 |
| 12 | 173 |
| 13 | 202 |
| 14 | 239 |
| 15 | 461 |
| 16 | 479 |
| 17 | 659 |
| 18 | 1031 |
| 19 | 1319 |
| 20 | 1579 |
| 21 | 1847 |