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 | 9 |
| 5 | 36 |
| 6 | 98 |
| 7 | 246 |
| 8 | 646 |
| 9 | 1777 |
| 10 | 4883 |
| 11 | 13120 |
| 12 | 34642 |
| 13 | 90976 |
| 14 | 239160 |
| 15 | 629427 |