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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 9 |
| 6 | 23 |
| 7 | 25 |
| 8 | 71 |
| 9 | 73 |
| 10 | 263 |
| 11 | 265 |
| 12 | 911 |
| 13 | 913 |
| 14 | 5021 |
| 15 | 5023 |
| 16 | 23291 |
| 17 | 23293 |
| 18 | 41359 |
| 19 | 152681 |
| 20 | 152683 |
| 21 | 285985 |
| 22 | 857951 |
| 23 | 857953 |
| 24 | 1517571 |
| 25 | 1873772 |
| 26 | 2498606 |
| 27 | 11032457 |
| 28 | 11032459 |
| 29 | 16576383 |
| 30 | 50600183 |
| 31 | 50600185 |
| 32 | 58908616 |
| 33 | 235819403 |
| 34 | 235819405 |
| 35 | 707458211 |
| 36 | 707458213 |
| 37 | 1160837269 |
| 38 | 3482511803 |
| 39 | 3482511805 |