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 | 117649 |
| 2 | 208422380089 |
| 3 | 567869252041 |
| 4 | 2839760855281 |
| 5 | 5534900853769 |
| 6 | 17416274304961 |
| 7 | 69980368892329 |
| 8 | 104413920565969 |
| 9 | 301855146292441 |
| 10 | 558845013849409 |
| 11 | 743702041351801 |
| 12 | 1268163904241521 |
| 13 | 2607614922465721 |