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 | 1 |
| 3 | 7 |
| 4 | 1 |
| 5 | 7 |
| 6 | 17 |
| 7 | 119 |
| 8 | 193 |
| 9 | 327 |
| 10 | 753 |
| 11 | 1175 |
| 12 | 2081 |
| 13 | 6375 |
| 14 | 3665 |
| 15 | 9271 |
| 16 | 32129 |
| 17 | 28295 |
| 18 | 66993 |
| 19 | 206807 |
| 20 | 923361 |
| 21 | 1220647 |
| 22 | 2253073 |
| 23 | 7382903 |
| 24 | 9737281 |
| 25 | 1052103 |
| 26 | 40919153 |
| 27 | 17998615 |
| 28 | 125990305 |
| 29 | 345061223 |
| 30 | 804815825 |
| 31 | 265001655 |
| 32 | 1855011585 |
| 33 | 4395146503 |
| 34 | 4996221745 |