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 | 3 |
| 2 | 34 |
| 3 | 10 |
| 4 | 21 |
| 5 | 8 |
| 6 | 20 |
| 7 | 12 |
| 8 | 456 |
| 9 | 168 |
| 10 | 216 |
| 11 | 40 |
| 12 | 1764 |
| 13 | 24 |
| 14 | 432 |
| 15 | 2772 |
| 16 | 780 |
| 17 | 1008 |
| 18 | 5640 |
| 19 | 720 |
| 20 | 88452 |
| 21 | 15840 |
| 22 | 840 |
| 23 | 3360 |
| 24 | 14040 |
| 25 | 288288 |
| 26 | 117600 |
| 27 | 338400 |
| 28 | 13860 |
| 29 | 40320 |
| 30 | 6283200 |
| 31 | 100800 |
| 32 | 2106720 |
| 33 | 7698600 |
| 34 | 26943840 |
| 35 | 19768320 |
| 36 | 202799520 |
| 37 | 12972960 |
| 38 | 242260200 |
| 39 | 372556800 |