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 | 784 |
| 2 | 18225 |
| 3 | 741321 |
| 4 | 35366809 |
| 5 | 1557328369 |
| 6 | 69043343121 |
| 7 | 3036560660329 |
| 8 | 134086441384900 |
| 9 | 5933816403750361 |
| 10 | 262150807596195904 |
| 11 | 11579543313397076809 |
| 12 | 511643156104631950569 |
| 13 | 22607722308771420398449 |