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 | 12 |
| 2 | 420 |
| 3 | 540 |
| 4 | 2268 |
| 5 | 7020 |
| 6 | 10692 |
| 7 | 11340 |
| 8 | 17640 |
| 9 | 24948 |
| 10 | 42750 |
| 11 | 56700 |
| 12 | 87120 |
| 13 | 152460 |
| 14 | 409500 |
| 15 | 413100 |
| 16 | 609840 |
| 17 | 996072 |
| 18 | 2478600 |
| 19 | 3822000 |
| 20 | 5287500 |
| 21 | 9189180 |
| 22 | 9447840 |
| 23 | 14871600 |
| 24 | 20241900 |
| 25 | 20567520 |
| 26 | 23510592 |
| 27 | 23832800 |
| 28 | 27766152 |
| 29 | 28552500 |
| 30 | 39358800 |
| 31 | 41135040 |
| 32 | 44783648 |
| 33 | 49985100 |