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 | 0 |
| 2 | 1456 |
| 3 | 6877444662696557082772912 |
| 4 | 76275529557006774610910008878682146858549281112703393437716260657617146482196178356917329340682828388636625682127565089301355422219073820139711425456833968 |