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 | 6 |
| 4 | 28 |
| 5 | 36 |
| 6 | 120 |
| 7 | 300 |
| 8 | 528 |
| 9 | 630 |
| 10 | 2016 |
| 11 | 3240 |
| 12 | 5460 |
| 13 | 25200 |
| 14 | 73920 |
| 15 | 157080 |
| 16 | 437580 |
| 17 | 749700 |
| 18 | 1385280 |
| 19 | 1493856 |
| 20 | 2031120 |
| 21 | 2162160 |
| 22 | 17907120 |
| 23 | 76576500 |
| 24 | 103672800 |
| 25 | 236215980 |
| 26 | 842161320 |
| 27 | 3090906000 |
| 28 | 4819214400 |
| 29 | 7589181600 |
| 30 | 7966312200 |
| 31 | 13674528000 |
| 32 | 20366564400 |