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 | 235 |
| 2 | 357 |
| 3 | 5711 |
| 4 | 71113 |
| 5 | 111317 |
| 6 | 131719 |
| 7 | 171923 |
| 8 | 192329 |
| 9 | 232931 |
| 10 | 293137 |
| 11 | 313741 |
| 12 | 374143 |
| 13 | 414347 |
| 14 | 434753 |
| 15 | 475359 |
| 16 | 535961 |
| 17 | 596167 |
| 18 | 616771 |
| 19 | 677173 |
| 20 | 717379 |
| 21 | 737983 |
| 22 | 798389 |
| 23 | 838997 |
| 24 | 8997101 |
| 25 | 97101103 |
| 26 | 101103107 |
| 27 | 103107109 |
| 28 | 107109113 |
| 29 | 109113127 |