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 | 1 |
| 3 | 14 |
| 4 | 956 |
| 5 | 9331320 |
| 6 | 6406603065901952 |
| 7 | 16879085743296493569230716352778240 |
| 8 | 717956902513121252476003434439730211883694285987816199468264943161704448 |