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 | 30 |
| 4 | 112 |
| 5 | 507 |
| 6 | 2837 |
| 7 | 17220 |
| 8 | 111156 |
| 9 | 759256 |
| 10 | 5425573 |
| 11 | 40174725 |
| 12 | 305689269 |
| 13 | 2379622234 |
| 14 | 18887841658 |