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 | 3 |
| 3 | 11 |
| 4 | 100 |
| 5 | 2090 |
| 6 | 415729 |
| 7 | 15670134831 |
| 8 | 2990945138477441778 |
| 9 | 28553369883190773267638351857949 |
| 10 | 22025764139998888788032314837232820672093881927968648914 |