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) |
|---|---|
| 0 | 70 |
| 1 | 2352 |
| 2 | 47820 |
| 3 | 784672 |
| 4 | 11515714 |
| 5 | 158295072 |
| 6 | 2086803540 |
| 7 | 26737722400 |
| 8 | 335676172480 |
| 9 | 4150940757440 |
| 10 | 50739269522864 |
| 11 | 614607881444256 |
| 12 | 7390867767651290 |