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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 300 |
| 6 | 233821 |
| 7 | 78501094 |
| 8 | 15532759830 |
| 9 | 2213672795040 |
| 10 | 254206334062527 |
| 11 | 25146386270836578 |
| 12 | 2235664320306737320 |
| 13 | 183782806231396191820 |
| 14 | 14248056393984957136593 |