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 | 8 |
| 4 | 36 |
| 5 | 72 |
| 6 | 128 |
| 7 | 216 |
| 8 | 1152 |
| 9 | 3456 |
| 10 | 27000 |
| 11 | 28800 |
| 12 | 86400 |
| 13 | 279936 |
| 14 | 432000 |
| 15 | 4233600 |
| 16 | 6998400 |
| 17 | 21168000 |
| 18 | 34992000 |
| 19 | 148176000 |
| 20 | 342921600 |
| 21 | 1714608000 |
| 22 | 8957952000 |
| 23 | 12002256000 |
| 24 | 197222256000 |
| 25 | 207467568000 |
| 26 | 438939648000 |
| 27 | 1071630000000 |
| 28 | 1452272976000 |
| 29 | 3072577536000 |
| 30 | 7501410000000 |