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) |
|---|---|
| 4 | 8 |
| 5 | 140 |
| 6 | 1290 |
| 7 | 7374 |
| 8 | 32477 |
| 9 | 116420 |
| 10 | 358112 |
| 11 | 976063 |
| 12 | 2425756 |
| 13 | 5560046 |
| 14 | 11946923 |
| 15 | 24274195 |
| 16 | 46975815 |
| 17 | 87140153 |