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 | 403 |
| 2 | 1207 |
| 3 | 2701 |
| 4 | 7663 |
| 5 | 35143 |
| 6 | 75007 |
| 7 | 117907 |
| 8 | 127087 |
| 9 | 140209 |
| 10 | 173809 |
| 11 | 197209 |
| 12 | 247021 |
| 13 | 257821 |
| 14 | 342127 |
| 15 | 382387 |
| 16 | 643063 |
| 17 | 692443 |
| 18 | 743623 |
| 19 | 1226221 |
| 20 | 1341331 |
| 21 | 1626151 |
| 22 | 1698661 |
| 23 | 1739161 |
| 24 | 2073991 |
| 25 | 2138791 |
| 26 | 2528611 |
| 27 | 2561011 |
| 28 | 3321133 |