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 | 24 |
| 8 | 60 |
| 9 | 120 |
| 10 | 168 |
| 11 | 360 |
| 12 | 1080 |
| 13 | 840 |
| 14 | 3360 |
| 15 | 2520 |
| 16 | 7560 |
| 17 | 15120 |
| 18 | 30240 |
| 19 | 84840 |
| 20 | 196560 |
| 21 | 339360 |
| 22 | 254520 |
| 23 | 1102920 |
| 24 | 763560 |
| 25 | 1527120 |
| 26 | 4581360 |
| 27 | 3054240 |
| 28 | 9162720 |
| 29 | 9926280 |
| 30 | 19852560 |
| 31 | 59557680 |
| 32 | 39705120 |
| 33 | 119115360 |
| 34 | 277935840 |
| 35 | 674987040 |
| 36 | 1151448480 |
| 37 | 1469089440 |