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 | 5 |
| 3 | 19 |
| 4 | 263 |
| 5 | 373 |
| 6 | 1033 |
| 7 | 65551 |
| 8 | 123833 |
| 9 | 283553 |
| 10 | 292993 |
| 11 | 2197633 |
| 12 | 5778673 |
| 13 | 12795193 |
| 14 | 10500613 |
| 15 | 19980283 |
| 16 | 32213033 |
| 17 | 36978853 |
| 18 | 72494813 |
| 19 | 140724953 |
| 20 | 164119063 |
| 21 | 183105509 |
| 22 | 193710277 |
| 23 | 320210941 |
| 24 | 450065801 |
| 25 | 268354393 |
| 26 | 496922891 |
| 27 | 506906473 |
| 28 | 1333406021 |