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 | 2 |
| 2 | 3 |
| 3 | 23 |
| 4 | 29 |
| 5 | 223 |
| 6 | 229 |
| 7 | 233 |
| 8 | 239 |
| 9 | 293 |
| 10 | 929 |
| 11 | 2239 |
| 12 | 2293 |
| 13 | 2333 |
| 14 | 2339 |
| 15 | 2393 |
| 16 | 2399 |
| 17 | 2939 |
| 18 | 2999 |
| 19 | 3229 |
| 20 | 3299 |
| 21 | 3323 |
| 22 | 3329 |
| 23 | 3923 |
| 24 | 3929 |
| 25 | 9239 |
| 26 | 9293 |
| 27 | 9323 |
| 28 | 9923 |
| 29 | 9929 |
| 30 | 22229 |
| 31 | 22993 |
| 32 | 23293 |
| 33 | 23333 |
| 34 | 23339 |
| 35 | 23399 |
| 36 | 23929 |
| 37 | 23993 |
| 38 | 29333 |
| 39 | 29339 |
| 40 | 29399 |
| 41 | 32233 |
| 42 | 32299 |
| 43 | 32323 |