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) |
|---|---|
| 2 | 12 |
| 3 | 10656 |
| 4 | 6262080 |
| 5 | 4583049300 |
| 6 | 3172546876500 |
| 7 | 1799561912439312 |
| 8 | 747208691021333376 |
| 9 | 207556530641358183360 |
| 10 | 36509426066350663265700 |
| 11 | 4057698689067050461472940 |
| 12 | 296245251637717304580959808 |
| 13 | 14987935907592332503472128488 |
| 14 | 553418104530158445362464783740 |