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 | 6 |
| 3 | 12 |
| 4 | 30 |
| 5 | 0 |
| 6 | 60 |
| 7 | 192 |
| 8 | 270 |
| 9 | 180 |
| 10 | 240 |
| 11 | 0 |
| 12 | 420 |
| 13 | 0 |
| 14 | 2112 |
| 15 | 1620 |
| 16 | 1320 |
| 17 | 0 |
| 18 | 2340 |
| 19 | 786432 |
| 20 | 3120 |
| 21 | 4800 |
| 22 | 15360 |
| 23 | 0 |
| 24 | 3360 |
| 25 | 388962 |
| 26 | 724992 |
| 27 | 6300 |
| 28 | 29760 |
| 29 | 0 |
| 30 | 12240 |
| 31 | 0 |
| 32 | 7560 |
| 33 | 617472 |
| 34 | 47382528 |
| 35 | 81648 |
| 36 | 21600 |
| 37 | 0 |
| 38 | 651952128 |
| 39 | 995328 |
| 40 | 21840 |
| 41 | 0 |
| 42 | 33600 |
| 43 | 0 |
| 44 | 138240 |