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) |
|---|---|
| 6 | 0 |
| 7 | 1 |
| 8 | 1 |
| 9 | 3 |
| 10 | 8 |
| 11 | 22 |
| 12 | 60 |
| 13 | 168 |
| 14 | 466 |
| 15 | 1306 |
| 16 | 3677 |
| 17 | 10400 |
| 18 | 29503 |
| 19 | 83964 |
| 20 | 239523 |
| 21 | 684855 |
| 22 | 1961933 |
| 23 | 5630300 |
| 24 | 16182535 |
| 25 | 46576693 |
| 26 | 134225427 |
| 27 | 387254945 |
| 28 | 1118433179 |
| 29 | 3233228736 |
| 30 | 9354963666 |
| 31 | 27089288339 |
| 32 | 78501221909 |
| 33 | 227643444368 |
| 34 | 660560681614 |
| 35 | 1917918979943 |
| 36 | 5571738217340 |