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 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 11 |
| 8 | 22 |
| 9 | 45 |
| 10 | 101 |
| 11 | 223 |
| 12 | 520 |
| 13 | 1223 |
| 14 | 2954 |
| 15 | 7208 |
| 16 | 17905 |
| 17 | 44863 |
| 18 | 113738 |
| 19 | 290605 |
| 20 | 748711 |
| 21 | 1941592 |
| 22 | 5067433 |
| 23 | 13297590 |
| 24 | 35074788 |
| 25 | 92939166 |
| 26 | 247317085 |
| 27 | 660681399 |
| 28 | 1771321949 |
| 29 | 4764829720 |
| 30 | 12857155911 |
| 31 | 34793296227 |
| 32 | 94410222996 |
| 33 | 256826514689 |
| 34 | 700311754812 |
| 35 | 1913868186951 |