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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 4 |
| 5 | 12 |
| 6 | 24 |
| 7 | 65 |
| 8 | 156 |
| 9 | 422 |
| 10 | 1057 |
| 11 | 2708 |
| 12 | 6574 |
| 13 | 15399 |
| 14 | 33438 |
| 15 | 66787 |
| 16 | 118242 |
| 17 | 180602 |
| 18 | 227896 |
| 19 | 226652 |
| 20 | 169294 |
| 21 | 97224 |
| 22 | 44324 |
| 23 | 16416 |
| 24 | 5005 |
| 25 | 1247 |
| 26 | 261 |
| 27 | 46 |
| 28 | 8 |
| 29 | 1 |
| 30 | 1 |