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 | 1 |
| 1 | 0 |
| 2 | 10 |
| 3 | 10 |
| 4 | 190 |
| 5 | 460 |
| 6 | 4690 |
| 7 | 17650 |
| 8 | 136630 |
| 9 | 651790 |
| 10 | 4439890 |
| 11 | 24056020 |
| 12 | 154885870 |
| 13 | 898393870 |
| 14 | 5659321510 |
| 15 | 34068918250 |
| 16 | 213351643990 |