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) |
|---|---|
| 3 | 1 |
| 4 | 12 |
| 5 | 3 |
| 6 | 150 |
| 7 | 60 |
| 8 | 12 |
| 9 | 2160 |
| 10 | 1080 |
| 11 | 360 |
| 12 | 60 |
| 13 | 36015 |
| 14 | 20580 |
| 15 | 8820 |
| 16 | 2520 |
| 17 | 360 |
| 18 | 688128 |
| 19 | 430080 |
| 20 | 215040 |
| 21 | 80640 |
| 22 | 20160 |
| 23 | 2520 |
| 24 | 14880348 |
| 25 | 9920232 |
| 26 | 5511240 |
| 27 | 2449440 |
| 28 | 816480 |
| 29 | 181440 |
| 30 | 20160 |
| 31 | 360000000 |
| 32 | 252000000 |
| 33 | 151200000 |
| 34 | 75600000 |
| 35 | 30240000 |
| 36 | 9072000 |