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 | 32 |
| 3 | 522 |
| 4 | 5776 |
| 5 | 50600 |
| 6 | 380424 |
| 7 | 2570932 |
| 8 | 16073600 |
| 9 | 94748400 |
| 10 | 533515240 |
| 11 | 2896652396 |
| 12 | 15268777440 |
| 13 | 78544641448 |
| 14 | 395875164104 |
| 15 | 1960998472260 |
| 16 | 9570684204544 |
| 17 | 46112171619296 |
| 18 | 219682468794600 |
| 19 | 1036237335593500 |