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) |
|---|---|
| 0 | 13 |
| 1 | 1439 |
| 2 | 100799 |
| 3 | 3548879 |
| 4 | 14061599 |
| 5 | 38342303 |
| 6 | 120355199 |
| 7 | 12555446399 |