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 | 23252729 |
| 2 | 77798183 |
| 3 | 115117119121 |
| 4 | 197199201203 |
| 5 | 211213215217 |
| 6 | 221223225227 |
| 7 | 227229231233 |
| 8 | 265267269271 |
| 9 | 281283285287 |
| 10 | 311313315317 |
| 11 | 317319321323 |
| 12 | 343345347349 |
| 13 | 373375377379 |
| 14 | 397399401403 |
| 15 | 403405407409 |
| 16 | 433435437439 |