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) |
|---|---|
| 3 | 0 |
| 4 | 1 |
| 5 | 10742 |
| 6 | 1562979 |
| 7 | 19868428 |
| 8 | 116875556 |
| 9 | 471829672 |
| 10 | 1513833810 |
| 11 | 4145705032 |
| 12 | 10094479834 |
| 13 | 22430185920 |