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 | 1 |
| 1 | 96 |
| 2 | 4560 |
| 3 | 142880 |
| 4 | 3321960 |
| 5 | 61124064 |
| 6 | 927048304 |
| 7 | 11919192480 |
| 8 | 132601016340 |
| 9 | 1296543270880 |
| 10 | 11279926456656 |
| 11 | 88188515933856 |
| 12 | 624668654531480 |
| 13 | 4036320536972640 |
| 14 | 23929614612052080 |
| 15 | 130815226545884704 |
| 16 | 662252084388541314 |
| 17 | 3116480397122547360 |