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 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 3534490 |
| 9 | 352456980 |
| 10 | 19724988666 |
| 11 | 814875498464 |
| 12 | 27678691047563 |
| 13 | 817987730593078 |
| 14 | 21764920947291140 |