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 | 2 |
| 3 | 4 |
| 4 | 9 |
| 5 | 21 |
| 6 | 38 |
| 7 | 82 |
| 8 | 164 |
| 9 | 261 |
| 10 | 424 |
| 11 | 749 |
| 12 | 1097 |
| 13 | 1721 |
| 14 | 2592 |
| 15 | 4351 |
| 16 | 7319 |
| 17 | 10725 |
| 18 | 17013 |
| 19 | 27773 |
| 20 | 44767 |
| 21 | 73914 |
| 22 | 118990 |
| 23 | 185059 |
| 24 | 275055 |
| 25 | 401059 |
| 26 | 617679 |
| 27 | 935331 |
| 28 | 1379826 |
| 29 | 2089569 |
| 30 | 2962015 |
| 31 | 3899417 |
| 32 | 5202824 |