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 | 5 |
| 2 | 20 |
| 3 | 98 |
| 4 | 180 |
| 5 | 412 |
| 6 | 806 |
| 7 | 1606 |
| 8 | 3070 |
| 9 | 5808 |
| 10 | 10798 |
| 11 | 19866 |
| 12 | 36184 |