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 | 1 |
| 1 | 1 |
| 2 | 65 |
| 3 | 266817 |
| 4 | 69963653697 |
| 5 | 1173835620696269377 |
| 6 | 1260401809332973746871411265 |
| 7 | 86614199277767115453624156235708310081 |
| 8 | 380933302489206359659857650468008737411766944866881 |