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 | 19 |
| 2 | 109 |
| 3 | 3889 |
| 4 | 139969 |
| 5 | 839809 |
| 6 | 5038849 |
| 7 | 1088391169 |
| 8 | 1410554953729 |
| 9 | 511745184538734624769 |
| 10 | 110536959860366678949889 |
| 11 | 2424843832394292181929418801369608880129 |