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 | 12 |
| 6 | 18 |
| 7 | 36 |
| 8 | 48 |
| 9 | 64 |
| 10 | 96 |
| 11 | 192 |
| 12 | 240 |
| 13 | 480 |
| 14 | 720 |
| 15 | 960 |
| 16 | 1200 |
| 17 | 2400 |
| 18 | 2880 |
| 19 | 5760 |
| 20 | 7200 |
| 21 | 9600 |
| 22 | 14400 |
| 23 | 28800 |
| 24 | 33600 |
| 25 | 40320 |
| 26 | 60480 |
| 27 | 69120 |
| 28 | 86400 |
| 29 | 172800 |
| 30 | 201600 |
| 31 | 403200 |
| 32 | 483840 |
| 33 | 645120 |
| 34 | 967680 |
| 35 | 1161216 |
| 36 | 1306368 |
| 37 | 2612736 |
| 38 | 3919104 |
| 39 | 5225472 |
| 40 | 5971968 |