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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 15 |
| 8 | 29 |
| 9 | 61 |
| 10 | 126 |
| 11 | 266 |
| 12 | 566 |
| 13 | 1212 |
| 14 | 2619 |
| 15 | 5685 |
| 16 | 12419 |
| 17 | 27247 |
| 18 | 60049 |
| 19 | 132847 |
| 20 | 294931 |
| 21 | 656877 |
| 22 | 1467258 |
| 23 | 3286218 |
| 24 | 7378240 |
| 25 | 16603458 |
| 26 | 37441990 |
| 27 | 84599854 |
| 28 | 191501532 |
| 29 | 434224404 |
| 30 | 986161959 |
| 31 | 2243009869 |
| 32 | 5108859821 |