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 | 5 |
| 4 | 7 |
| 5 | 43 |
| 6 | 211 |
| 7 | 241 |
| 8 | 251 |
| 9 | 271 |
| 10 | 281 |
| 11 | 433 |
| 12 | 443 |
| 13 | 463 |
| 14 | 827 |
| 15 | 857 |
| 16 | 877 |
| 17 | 887 |
| 18 | 2111 |
| 19 | 2221 |
| 20 | 2441 |
| 21 | 2551 |
| 22 | 4003 |
| 23 | 4663 |
| 24 | 4993 |
| 25 | 8117 |
| 26 | 8447 |
| 27 | 8887 |
| 28 | 20101 |
| 29 | 20201 |
| 30 | 21011 |
| 31 | 21211 |
| 32 | 21611 |
| 33 | 21911 |
| 34 | 22621 |
| 35 | 22721 |
| 36 | 22921 |
| 37 | 23131 |
| 38 | 23431 |
| 39 | 23531 |
| 40 | 23831 |
| 41 | 24841 |