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 | 454 |
| 2 | 45891 |
| 3 | 547208496 |
| 4 | 3013267310449 |
| 5 | 1961694770407970734 |
| 6 | 589785633779065944213245 |
| 7 | 20963601300674244910397534828794 |
| 8 | 344117353602393170461608383214200982125 |