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 | 0 |
| 4 | 39 |
| 5 | 1194 |
| 6 | 11259 |
| 7 | 64776 |
| 8 | 275805 |
| 9 | 957516 |
| 10 | 2859768 |
| 11 | 7606821 |
| 12 | 18444537 |
| 13 | 41458599 |
| 14 | 87464157 |
| 15 | 174846963 |
| 16 | 333687378 |
| 17 | 611613150 |
| 18 | 1081890447 |