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 | 4 |
| 2 | 6 |
| 3 | 12 |
| 4 | 24 |
| 5 | 30 |
| 6 | 60 |
| 7 | 120 |
| 8 | 180 |
| 9 | 210 |
| 10 | 360 |
| 11 | 420 |
| 12 | 840 |
| 13 | 1260 |
| 14 | 2310 |
| 15 | 2520 |
| 16 | 4620 |
| 17 | 7560 |
| 18 | 9240 |
| 19 | 13860 |
| 20 | 27720 |
| 21 | 55440 |
| 22 | 60060 |
| 23 | 83160 |
| 24 | 110880 |
| 25 | 120120 |
| 26 | 138600 |
| 27 | 166320 |
| 28 | 180180 |
| 29 | 277200 |
| 30 | 360360 |
| 31 | 720720 |
| 32 | 1081080 |
| 33 | 1441440 |
| 34 | 1801800 |
| 35 | 2162160 |
| 36 | 3063060 |
| 37 | 3603600 |
| 38 | 5405400 |
| 39 | 6126120 |