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 | 120 |
| 2 | 523776 |
| 3 | 1476304896 |
| 4 | 31998395520 |
| 5 | 518666803200 |
| 6 | 30823866178560 |
| 7 | 740344994887680 |
| 8 | 796928461056000 |
| 9 | 212517062615531520 |
| 10 | 69357059049509038080 |
| 11 | 87934476737668055040 |
| 12 | 170206605192656148480 |
| 13 | 1161492388333469337600 |
| 14 | 1802582780370364661760 |
| 15 | 1940351499647188992000 |