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 | 84 |
| 5 | 84 |
| 6 | 7 |
| 7 | 56 |
| 8 | 840 |
| 9 | 10920 |
| 10 | 32760 |
| 11 | 32760 |
| 12 | 32760 |
| 13 | 32760 |
| 14 | 16380 |
| 15 | 32760 |
| 16 | 1015560 |
| 17 | 338520 |
| 18 | 338520 |
| 19 | 338520 |
| 20 | 338520 |
| 21 | 1354080 |
| 22 | 4062240 |
| 23 | 4062240 |
| 24 | 4062240 |
| 25 | 131040 |
| 26 | 131040 |
| 27 | 131040 |
| 28 | 131040 |
| 29 | 131040 |
| 30 | 43680 |
| 31 | 21840 |
| 32 | 65520 |
| 33 | 32760 |
| 34 | 98280 |
| 35 | 196560 |
| 36 | 196560 |
| 37 | 3734640 |
| 38 | 3734640 |