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 | 4 |
| 2 | 50 |
| 3 | 82 |
| 4 | 1246 |
| 5 | 581 |
| 6 | 2494 |
| 7 | 1744 |
| 8 | 19961 |
| 9 | 6981 |
| 10 | 61136 |
| 11 | 19210 |
| 12 | 179669 |
| 13 | 34935 |
| 14 | 122268 |
| 15 | 57628 |
| 16 | 244539 |
| 17 | 96062 |
| 18 | 2415480 |
| 19 | 192141 |
| 20 | 978161 |
| 21 | 249769 |
| 22 | 1956341 |
| 23 | 576404 |
| 24 | 2200863 |
| 25 | 499557 |