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 | 13 |
| 2 | 163 |
| 3 | 2803 |
| 4 | 3565153 |
| 5 | 210344143 |
| 6 | 86915972211813115391953 |
| 7 | 4419764102942908730796303703 |
| 8 | 114681479899746991802547357477494803 |