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 | 7 |
| 3 | 87 |
| 4 | 6429 |
| 5 | 2303283 |
| 6 | 2479201432 |
| 7 | 3874477609666 |
| 8 | 6599430028972418 |
| 9 | 11005421717482468773 |
| 10 | 17273734529317171068203 |
| 11 | 25181456057693008339763059 |
| 12 | 34003737003435994894150148682 |