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 | 1 |
| 2 | 3 |
| 3 | 15 |
| 4 | 3 |
| 5 | 156 |
| 6 | 15 |
| 7 | 1284 |
| 8 | 87 |
| 9 | 642 |
| 10 | 172 |
| 11 | 2189 |
| 12 | 149 |
| 13 | 15 |
| 14 | 2865 |
| 15 | 215 |
| 16 | 87 |