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 | 131 |
| 5 | 212 |
| 6 | 313 |
| 7 | 515 |
| 8 | 535 |
| 9 | 616 |
| 10 | 10301 |
| 11 | 10501 |
| 12 | 11111 |
| 13 | 12521 |
| 14 | 13531 |
| 15 | 14141 |
| 16 | 15151 |
| 17 | 15551 |
| 18 | 16361 |
| 19 | 20302 |
| 20 | 21512 |
| 21 | 22322 |
| 22 | 22522 |
| 23 | 23132 |
| 24 | 24542 |
| 25 | 25352 |