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 | 1 |
| 3 | 8 |
| 4 | 116 |
| 5 | 4316 |
| 6 | 483835 |
| 7 | 175048780 |
| 8 | 212125583518 |
| 9 | 887136857205696 |
| 10 | 13086449050056880074 |
| 11 | 691487226135525983266460 |
| 12 | 132437909864451274070001431956 |
| 13 | 92821692762628588679459049647697100 |
| 14 | 239928160288841627346208269001938306502290 |