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 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 48 |
| 6 | 108 |
| 7 | 245 |
| 8 | 1044 |
| 9 | 20208 |
| 10 | 52740 |
| 11 | 89189 |
| 12 | 130080 |
| 13 | 183657 |
| 14 | 197061 |
| 15 | 348453 |