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 | 3 |
| 3 | 6 |
| 4 | 12 |
| 5 | 28 |
| 6 | 84 |
| 7 | 120 |
| 8 | 234 |
| 9 | 270 |
| 10 | 496 |
| 11 | 672 |
| 12 | 1080 |
| 13 | 1488 |
| 14 | 1638 |
| 15 | 6048 |
| 16 | 6552 |
| 17 | 8128 |
| 18 | 24384 |
| 19 | 30240 |
| 20 | 32760 |
| 21 | 35640 |
| 22 | 199584 |
| 23 | 435708 |
| 24 | 523776 |
| 25 | 2142720 |
| 26 | 2178540 |
| 27 | 4713984 |
| 28 | 12999168 |
| 29 | 18506880 |
| 30 | 23569920 |
| 31 | 33550336 |
| 32 | 36197280 |
| 33 | 45532800 |