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 | 8 |
| 2 | 56 |
| 3 | 336 |
| 4 | 2352 |
| 5 | 15120 |
| 6 | 105168 |
| 7 | 710640 |
| 8 | 4883424 |
| 9 | 33384960 |
| 10 | 228945360 |
| 11 | 1568401296 |
| 12 | 10751253072 |
| 13 | 73683206688 |
| 14 | 505043014560 |