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 | 19 |
| 2 | 43 |
| 3 | 109 |
| 4 | 1117 |
| 5 | 3889 |
| 6 | 40177 |
| 7 | 139969 |
| 8 | 326593 |
| 9 | 839809 |
| 10 | 4718557 |
| 11 | 5038849 |
| 12 | 5925313 |
| 13 | 18874333 |
| 14 | 52068097 |
| 15 | 1088391169 |
| 16 | 1874451457 |
| 17 | 6115248577 |
| 18 | 24461134273 |
| 19 | 1410554953729 |
| 20 | 2429289086977 |
| 21 | 31701630016513 |
| 22 | 118486616113153 |