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 | 2 |
| 3 | 12 |
| 4 | 36 |
| 5 | 120 |
| 6 | 360 |
| 7 | 1680 |
| 8 | 5040 |
| 9 | 5400 |
| 10 | 27000 |
| 11 | 36960 |
| 12 | 75600 |
| 13 | 110880 |
| 14 | 378000 |
| 15 | 960960 |
| 16 | 1587600 |
| 17 | 1663200 |
| 18 | 2882880 |
| 19 | 7938000 |
| 20 | 8316000 |
| 21 | 32672640 |
| 22 | 34927200 |
| 23 | 43243200 |
| 24 | 98017920 |
| 25 | 174636000 |
| 26 | 216216000 |
| 27 | 277830000 |
| 28 | 908107200 |
| 29 | 1152597600 |
| 30 | 1241560320 |
| 31 | 1470268800 |
| 32 | 1944810000 |