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 | 966721 |
| 4 | 76793344 |
| 5 | 5725140970 |
| 6 | 105562511360 |
| 7 | 2041422379715 |
| 8 | 18916515762176 |
| 9 | 172418925319284 |
| 10 | 1044180815600640 |
| 11 | 6210623507283525 |
| 12 | 27500897986132480 |
| 13 | 122853171969762526 |
| 14 | 443230405603523584 |