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 | 7 |
| 3 | 13 |
| 4 | 47 |
| 5 | 109 |
| 6 | 139 |
| 7 | 251 |
| 8 | 397 |
| 9 | 457 |
| 10 | 587 |
| 11 | 659 |
| 12 | 733 |
| 13 | 1187 |
| 14 | 1291 |
| 15 | 1399 |
| 16 | 2161 |
| 17 | 2311 |
| 18 | 2621 |
| 19 | 2953 |
| 20 | 3307 |
| 21 | 4073 |
| 22 | 4273 |
| 23 | 4937 |
| 24 | 5167 |
| 25 | 5641 |
| 26 | 7477 |
| 27 | 7759 |
| 28 | 10259 |
| 29 | 10607 |
| 30 | 10957 |
| 31 | 11311 |
| 32 | 12413 |
| 33 | 13177 |
| 34 | 13567 |
| 35 | 15619 |
| 36 | 20639 |
| 37 | 23167 |
| 38 | 24781 |
| 39 | 25339 |
| 40 | 25903 |
| 41 | 28211 |