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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 2464 |
| 6 | 405185 |
| 7 | 55169095 |
| 8 | 11077807074 |
| 9 | 4422260279456 |
| 10 | 3897809824077016 |
| 11 | 7363846127466734748 |