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 | 24 |
| 3 | 296 |
| 4 | 1304 |
| 5 | 3808 |
| 6 | 8832 |
| 7 | 17672 |
| 8 | 31888 |
| 9 | 53312 |
| 10 | 84040 |
| 11 | 126440 |
| 12 | 183144 |
| 13 | 257056 |
| 14 | 351344 |
| 15 | 469448 |
| 16 | 615072 |
| 17 | 792192 |
| 18 | 1005048 |
| 19 | 1258152 |
| 20 | 1556280 |