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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 49 |
| 4 | 400 |
| 5 | 4081 |
| 6 | 49964 |
| 7 | 713665 |
| 8 | 11649936 |
| 9 | 213946513 |
| 10 | 4365604372 |
| 11 | 97988751433 |
| 12 | 2399366732888 |
| 13 | 63647177397961 |
| 14 | 1818219651069852 |
| 15 | 55651486523443537 |
| 16 | 1816920458689600288 |
| 17 | 63026617425620098465 |