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 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 18 |
| 6 | 12 |
| 7 | 84 |
| 8 | 24 |
| 9 | 168 |
| 10 | 72 |
| 11 | 144 |
| 12 | 360 |
| 13 | 432 |
| 14 | 1080 |
| 15 | 2016 |
| 16 | 2160 |
| 17 | 6048 |
| 18 | 8064 |
| 19 | 15120 |
| 20 | 34272 |
| 21 | 24192 |
| 22 | 60480 |
| 23 | 48384 |
| 24 | 88704 |
| 25 | 120960 |
| 26 | 354816 |
| 27 | 241920 |
| 28 | 483840 |
| 29 | 665280 |
| 30 | 266112 |
| 31 | 798336 |
| 32 | 532224 |
| 33 | 1596672 |
| 34 | 1064448 |
| 35 | 1862784 |
| 36 | 2661120 |
| 37 | 3725568 |
| 38 | 5322240 |
| 39 | 10644480 |
| 40 | 7451136 |