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 | 72 |
| 3 | 240 |
| 4 | 420 |
| 5 | 600 |
| 6 | 1260 |
| 7 | 2352 |
| 8 | 4032 |
| 9 | 6480 |
| 10 | 7140 |
| 11 | 9900 |
| 12 | 14280 |
| 13 | 14520 |
| 14 | 20592 |
| 15 | 28392 |
| 16 | 38220 |
| 17 | 46872 |
| 18 | 50400 |
| 19 | 65280 |
| 20 | 78120 |
| 21 | 83232 |
| 22 | 104652 |
| 23 | 123552 |
| 24 | 129960 |
| 25 | 159600 |
| 26 | 194040 |
| 27 | 233772 |
| 28 | 279312 |
| 29 | 291060 |
| 30 | 331200 |
| 31 | 390000 |
| 32 | 456300 |
| 33 | 485112 |
| 34 | 530712 |
| 35 | 609180 |
| 36 | 613872 |
| 37 | 699732 |
| 38 | 706440 |
| 39 | 809100 |
| 40 | 852852 |
| 41 | 922560 |