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) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 43 |
| 4 | 934 |
| 5 | 40395 |
| 6 | 3420704 |
| 7 | 553097760 |
| 8 | 177191137344 |
| 9 | 102914156897887 |
| 10 | 122108799039662692 |