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 | 12 |
| 3 | 24 |
| 4 | 90 |
| 5 | 204 |
| 6 | 330 |
| 7 | 540 |
| 8 | 1080 |
| 9 | 1140 |
| 10 | 2184 |
| 11 | 3480 |
| 12 | 6324 |
| 13 | 15630 |
| 14 | 23496 |
| 15 | 38340 |
| 16 | 48510 |
| 17 | 56760 |
| 18 | 99636 |
| 19 | 234960 |
| 20 | 270180 |
| 21 | 300150 |
| 22 | 528180 |
| 23 | 703080 |
| 24 | 973644 |
| 25 | 1907178 |
| 26 | 5992380 |
| 27 | 7980930 |
| 28 | 12032640 |
| 29 | 20687436 |
| 30 | 23847642 |
| 31 | 27465840 |
| 32 | 28653720 |
| 33 | 34964340 |