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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 16 |
| 8 | 32 |
| 9 | 66 |
| 10 | 139 |
| 11 | 297 |
| 12 | 642 |
| 13 | 1404 |
| 14 | 3097 |
| 15 | 6888 |
| 16 | 15428 |
| 17 | 34770 |
| 18 | 78785 |
| 19 | 179397 |
| 20 | 410264 |
| 21 | 941935 |
| 22 | 2170275 |
| 23 | 5016604 |
| 24 | 11630024 |
| 25 | 27034824 |
| 26 | 63000261 |
| 27 | 147148341 |
| 28 | 344419767 |
| 29 | 807746487 |
| 30 | 1897829065 |
| 31 | 4466643367 |
| 32 | 10529301944 |
| 33 | 24858143953 |
| 34 | 58769113863 |