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 | 3 |
| 2 | 5 |
| 3 | 19 |
| 4 | 113 |
| 5 | 790 |
| 6 | 6319 |
| 7 | 56870 |
| 8 | 568699 |
| 9 | 6255688 |
| 10 | 75068255 |
| 11 | 975887314 |
| 12 | 13662422395 |