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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 1645 |
| 6 | 3290 |
| 7 | 4935 |
| 8 | 9870 |
| 9 | 3831674 |
| 10 | 11495022 |
| 11 | 346014339 |
| 12 | 692028678 |