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 | 2 |
| 2 | 3 |
| 3 | 8 |
| 4 | 15 |
| 5 | 30 |
| 6 | 56 |
| 7 | 104 |
| 8 | 189 |
| 9 | 340 |
| 10 | 605 |
| 11 | 1068 |
| 12 | 1872 |
| 13 | 3262 |
| 14 | 5655 |
| 15 | 9760 |
| 16 | 16779 |
| 17 | 28746 |
| 18 | 49096 |
| 19 | 83620 |
| 20 | 142065 |
| 21 | 240812 |
| 22 | 407353 |
| 23 | 687768 |
| 24 | 1159200 |
| 25 | 1950650 |
| 26 | 3277611 |
| 27 | 5499704 |
| 28 | 9216519 |
| 29 | 15426870 |
| 30 | 25793240 |
| 31 | 43080608 |
| 32 | 71884197 |
| 33 | 119835652 |