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 | 0 |
| 1 | 1 |
| 2 | 7 |
| 3 | 97 |
| 4 | 6031 |
| 5 | 8760337 |
| 6 | 8245932762607 |
| 7 | 3508518207942911995940881 |
| 8 | 311594265746788494170059418351454897488270152687 |