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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 6 |
| 7 | 2 |
| 8 | 8 |
| 9 | 24 |
| 10 | 60 |
| 11 | 12 |
| 12 | 288 |
| 13 | 96 |
| 14 | 84 |
| 15 | 60 |
| 16 | 3840 |
| 17 | 384 |
| 18 | 15552 |
| 19 | 576 |
| 20 | 14400 |
| 21 | 20160 |
| 22 | 221760 |
| 23 | 576 |
| 24 | 331776 |
| 25 | 552960 |
| 26 | 224640 |
| 27 | 51840 |
| 28 | 20321280 |
| 29 | 2903040 |
| 30 | 108864000 |
| 31 | 345600 |
| 32 | 17694720 |
| 33 | 145981440 |
| 34 | 51701760 |
| 35 | 1935360 |
| 36 | 11287019520 |
| 37 | 1254113280 |
| 38 | 2978519040 |
| 39 | 10782720 |