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 | 1 |
| 2 | 19 |
| 3 | 5881 |
| 4 | 115321795 |
| 5 | 101471705778601 |
| 6 | 5520471267708881730181 |
| 7 | 17949532724881770551236183389177 |
| 8 | 3781994369388530584295658367829503216546371 |