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 | 3 |
| 3 | 8 |
| 4 | 18 |
| 5 | 39 |
| 6 | 86 |
| 7 | 175 |
| 8 | 352 |
| 9 | 688 |
| 10 | 1318 |
| 11 | 2472 |
| 12 | 4576 |
| 13 | 8322 |
| 14 | 14959 |
| 15 | 26560 |
| 16 | 46657 |
| 17 | 81130 |
| 18 | 139866 |
| 19 | 239047 |
| 20 | 405496 |
| 21 | 682891 |
| 22 | 1142466 |
| 23 | 1899344 |
| 24 | 3139432 |
| 25 | 5160455 |
| 26 | 8438871 |
| 27 | 13732292 |
| 28 | 22242647 |
| 29 | 35867937 |
| 30 | 57597730 |
| 31 | 92121145 |
| 32 | 146775205 |
| 33 | 232998683 |
| 34 | 368579188 |
| 35 | 581091003 |