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) |
|---|---|
| 3 | 2 |
| 4 | 3 |
| 5 | 11 |
| 6 | 53 |
| 7 | 103 |
| 8 | 163 |
| 9 | 41 |
| 10 | 16481 |
| 11 | 1468457 |
| 12 | 1456321 |
| 13 | 139241 |
| 14 | 1796801 |
| 15 | 34361893981 |
| 16 | 15549624751 |
| 17 | 461702183 |
| 18 | 65026777 |
| 19 | 893977617157 |
| 20 | 17562703393 |
| 21 | 482455223267 |
| 22 | 85836476923 |
| 23 | 352463 |
| 24 | 809358677 |
| 25 | 499243508845229 |
| 26 | 1802157757041847990541 |