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 | 11 |
| 4 | 15 |
| 5 | 19 |
| 6 | 21 |
| 7 | 31 |
| 8 | 39 |
| 9 | 67 |
| 10 | 69 |
| 11 | 85 |
| 12 | 157 |
| 13 | 171 |
| 14 | 191 |
| 15 | 255 |
| 16 | 291 |
| 17 | 379 |
| 18 | 3669 |
| 19 | 4551 |
| 20 | 9531 |
| 21 | 13119 |
| 22 | 14211 |
| 23 | 20647 |
| 24 | 233965 |
| 25 | 337267 |
| 26 | 534429 |
| 27 | 535415 |
| 28 | 816039 |
| 29 | 991715 |