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 | 2 |
| 2 | 7 |
| 3 | 16 |
| 4 | 53 |
| 5 | 130 |
| 6 | 431 |
| 7 | 1104 |
| 8 | 3689 |
| 9 | 9730 |
| 10 | 32775 |
| 11 | 88288 |
| 12 | 299501 |