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) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 5 |
| 7 | 8 |
| 8 | 15 |
| 9 | 27 |
| 10 | 52 |
| 11 | 99 |
| 12 | 195 |
| 13 | 382 |
| 14 | 757 |
| 15 | 1499 |
| 16 | 2986 |
| 17 | 5945 |
| 18 | 11865 |
| 19 | 23678 |
| 20 | 47309 |
| 21 | 94519 |
| 22 | 188942 |
| 23 | 377689 |
| 24 | 755191 |
| 25 | 1510000 |
| 26 | 3019625 |
| 27 | 6038493 |
| 28 | 12076244 |
| 29 | 24150989 |
| 30 | 48300491 |
| 31 | 96597996 |
| 32 | 193193033 |
| 33 | 386380121 |
| 34 | 772754322 |
| 35 | 1545496779 |
| 36 | 3090981745 |
| 37 | 6181939812 |