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 | 4 |
| 3 | 6 |
| 4 | 720 |
| 5 | 12 |
| 6 | 3360 |
| 7 | 18 |
| 8 | 9240 |
| 9 | 11793600 |
| 10 | 30 |
| 11 | 45239040 |
| 12 | 59280 |
| 13 | 42 |
| 14 | 91080 |
| 15 | 311875200 |
| 16 | 549853920 |
| 17 | 60 |
| 18 | 1072431360 |
| 19 | 328440 |
| 20 | 72 |
| 21 | 2533330800 |
| 22 | 531360 |
| 23 | 4701090240 |
| 24 | 60072730099200 |
| 25 | 970200 |
| 26 | 102 |
| 27 | 1157520 |
| 28 | 108 |
| 29 | 1367520 |
| 30 | 1063186156509747740870400000 |
| 31 | 2146560 |
| 32 | 43191973440 |