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) |
|---|---|
| 1 | 0 |
| 2 | 8 |
| 3 | 204 |
| 4 | 1788 |
| 5 | 8690 |
| 6 | 30360 |
| 7 | 85194 |
| 8 | 205394 |
| 9 | 441876 |
| 10 | 870912 |
| 11 | 1601708 |
| 12 | 2783574 |
| 13 | 4616220 |
| 14 | 7358312 |
| 15 | 11339430 |
| 16 | 16972182 |
| 17 | 24763604 |
| 18 | 35328426 |
| 19 | 49405944 |
| 20 | 67873484 |
| 21 | 91762128 |
| 22 | 122276784 |