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 | 6 |
| 2 | 622 |
| 3 | 16128 |
| 4 | 390125 |
| 5 | 10076832 |
| 6 | 282473877 |
| 7 | 8589932544 |
| 8 | 282429533565 |
| 9 | 9999999996000 |
| 10 | 379749833577917 |
| 11 | 15407021574579456 |
| 12 | 665416609183171053 |
| 13 | 30491346729331184928 |
| 14 | 1477891880035400377125 |
| 15 | 75557863725914323402752 |