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 | 9 |
| 4 | 19 |
| 5 | 41 |
| 6 | 43 |
| 7 | 83 |
| 8 | 89 |
| 9 | 91 |
| 10 | 143 |
| 11 | 299 |
| 12 | 307 |
| 13 | 341 |
| 14 | 381 |
| 15 | 585 |
| 16 | 995 |
| 17 | 1019 |
| 18 | 1027 |
| 19 | 2043 |
| 20 | 4301 |
| 21 | 6275 |
| 22 | 11157 |
| 23 | 11621 |
| 24 | 12315 |
| 25 | 17505 |
| 26 | 24771 |
| 27 | 30535 |
| 28 | 38635 |