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 | 23 |
| 2 | 211 |
| 3 | 223 |
| 4 | 229 |
| 5 | 241 |
| 6 | 271 |
| 7 | 283 |
| 8 | 2113 |
| 9 | 2131 |
| 10 | 2137 |
| 11 | 2179 |
| 12 | 2239 |
| 13 | 2251 |
| 14 | 2269 |
| 15 | 2281 |
| 16 | 2293 |
| 17 | 2311 |
| 18 | 2347 |
| 19 | 2383 |
| 20 | 2389 |
| 21 | 2467 |
| 22 | 2503 |
| 23 | 2521 |
| 24 | 2557 |
| 25 | 2593 |
| 26 | 2617 |
| 27 | 2647 |
| 28 | 2659 |
| 29 | 2677 |
| 30 | 2683 |
| 31 | 2719 |
| 32 | 2797 |
| 33 | 2857 |
| 34 | 2887 |
| 35 | 2953 |
| 36 | 2971 |
| 37 | 21013 |
| 38 | 21019 |
| 39 | 21031 |
| 40 | 21061 |
| 41 | 21163 |
| 42 | 21187 |