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 | 2 |
| 3 | 5 |
| 4 | 12 |
| 5 | 38 |
| 6 | 166 |
| 7 | 899 |
| 8 | 4768 |
| 9 | 28388 |
| 10 | 180529 |
| 11 | 1209318 |
| 12 | 8398278 |
| 13 | 60070590 |
| 14 | 441296836 |
| 15 | 3314576487 |
| 16 | 25379433651 |
| 17 | 197622677481 |