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 | 3 |
| 3 | 12 |
| 4 | 4 |
| 5 | 12 |
| 6 | 1 |
| 7 | 8 |
| 8 | 24 |
| 9 | 24 |
| 10 | 72 |
| 11 | 72 |
| 12 | 36 |
| 13 | 252 |
| 14 | 504 |
| 15 | 126 |
| 16 | 504 |
| 17 | 504 |
| 18 | 504 |
| 19 | 2520 |
| 20 | 840 |
| 21 | 3360 |
| 22 | 10080 |
| 23 | 10080 |
| 24 | 10080 |
| 25 | 2016 |
| 26 | 2016 |
| 27 | 2016 |
| 28 | 2016 |
| 29 | 10080 |
| 30 | 10080 |
| 31 | 5040 |
| 32 | 1260 |
| 33 | 5040 |
| 34 | 15120 |
| 35 | 7560 |
| 36 | 3780 |
| 37 | 71820 |
| 38 | 17955 |
| 39 | 143640 |
| 40 | 17955 |
| 41 | 35910 |
| 42 | 574560 |
| 43 | 6320160 |
| 44 | 6320160 |
| 45 | 6320160 |
| 46 | 6320160 |