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 | 3 |
| 1 | 1 |
| 2 | 6 |
| 3 | 72 |
| 4 | 120 |
| 5 | 1800 |
| 6 | 840 |
| 7 | 3600 |
| 8 | 2520 |
| 9 | 28800 |
| 10 | 10080 |
| 11 | 88200 |
| 12 | 27720 |
| 13 | 259200 |
| 14 | 50400 |
| 15 | 176400 |
| 16 | 83160 |
| 17 | 352800 |
| 18 | 138600 |
| 19 | 3484800 |
| 20 | 277200 |
| 21 | 1411200 |
| 22 | 360360 |
| 23 | 2822400 |
| 24 | 831600 |
| 25 | 3175200 |
| 26 | 720720 |
| 27 | 6350400 |
| 28 | 1663200 |
| 29 | 31363200 |
| 30 | 1441440 |
| 31 | 28576800 |
| 32 | 2162160 |
| 33 | 12700800 |
| 34 | 3326400 |
| 35 | 21344400 |
| 36 | 4324320 |