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 | 3 |
| 2 | 6 |
| 3 | 2 |
| 4 | 392 |
| 5 | 1656976026 |
| 6 | 122836566640423857273582993856 |
| 7 | 50043395758253154294953783566500246788902420299683914045600060272160541415159062540151890 |