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) |
|---|---|
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 9 |
| 8 | 24 |
| 9 | 81 |
| 10 | 274 |
| 11 | 1071 |
| 12 | 4357 |
| 13 | 18416 |
| 14 | 80040 |
| 15 | 356109 |
| 16 | 1610910 |
| 17 | 7399114 |