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 | 131 |
| 6 | 151 |
| 7 | 212 |
| 8 | 232 |
| 9 | 272 |
| 10 | 414 |
| 11 | 454 |
| 12 | 515 |
| 13 | 737 |
| 14 | 757 |
| 15 | 838 |
| 16 | 858 |
| 17 | 878 |
| 18 | 10501 |
| 19 | 10701 |
| 20 | 11711 |
| 21 | 12521 |
| 22 | 13531 |
| 23 | 13731 |
| 24 | 15151 |
| 25 | 15551 |
| 26 | 16161 |
| 27 | 17371 |
| 28 | 18181 |
| 29 | 18781 |