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 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 7 |
| 5 | 9 |
| 6 | 11 |
| 7 | 31 |
| 8 | 39 |
| 9 | 47 |
| 10 | 211 |
| 11 | 217 |
| 12 | 223 |
| 13 | 229 |
| 14 | 235 |
| 15 | 243 |
| 16 | 249 |
| 17 | 255 |
| 18 | 261 |
| 19 | 267 |
| 20 | 275 |
| 21 | 281 |
| 22 | 287 |
| 23 | 293 |
| 24 | 299 |
| 25 | 2311 |
| 26 | 2347 |
| 27 | 2383 |
| 28 | 2419 |
| 29 | 2455 |
| 30 | 2523 |
| 31 | 2559 |
| 32 | 2595 |
| 33 | 2631 |
| 34 | 2667 |
| 35 | 2735 |
| 36 | 2771 |
| 37 | 2807 |
| 38 | 2843 |
| 39 | 2879 |
| 40 | 30031 |
| 41 | 30061 |
| 42 | 30091 |
| 43 | 30121 |
| 44 | 30151 |
| 45 | 30181 |
| 46 | 30211 |
| 47 | 30247 |
| 48 | 30277 |
| 49 | 30307 |