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 | 6 |
| 2 | 726 |
| 3 | 8412 |
| 4 | 80812 |
| 5 | 340660 |
| 6 | 1516410 |
| 7 | 4213042 |
| 8 | 12861252 |
| 9 | 28421280 |
| 10 | 69306670 |
| 11 | 132493530 |
| 12 | 278307730 |
| 13 | 481381744 |
| 14 | 909136644 |
| 15 | 1461430338 |
| 16 | 2548699638 |
| 17 | 3874036128 |
| 18 | 6350628468 |
| 19 | 9236088510 |
| 20 | 14409332790 |
| 21 | 20220953874 |
| 22 | 30295374604 |