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 | 8 |
| 6 | 15 |
| 7 | 24 |
| 8 | 45 |
| 9 | 84 |
| 10 | 142 |
| 11 | 256 |
| 12 | 464 |
| 13 | 817 |
| 14 | 1464 |
| 15 | 2621 |
| 16 | 4649 |
| 17 | 8299 |
| 18 | 14819 |
| 19 | 26389 |
| 20 | 47033 |
| 21 | 83833 |
| 22 | 149325 |
| 23 | 266011 |
| 24 | 473867 |
| 25 | 843853 |