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 | 15 |
| 3 | 159 |
| 4 | 303 |
| 5 | 2887 |
| 6 | 5471 |
| 7 | 51839 |
| 8 | 98207 |
| 9 | 930247 |
| 10 | 1762287 |
| 11 | 16692639 |
| 12 | 31622991 |