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 | 3 |
| 6 | 8 |
| 7 | 46 |
| 8 | 176 |
| 9 | 955 |
| 10 | 5446 |
| 11 | 36122 |
| 12 | 259084 |
| 13 | 2043944 |
| 14 | 17371318 |
| 15 | 159616680 |
| 16 | 1566391958 |