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 | 2 |
| 3 | 6 |
| 4 | 10 |
| 5 | 102 |
| 6 | 494 |
| 7 | 794 |
| 8 | 1326 |
| 9 | 5242 |
| 10 | 5446 |
| 11 | 24602 |
| 12 | 87606 |
| 13 | 188558 |