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 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 8 |
| 8 | 29 |
| 9 | 85 |
| 10 | 211 |
| 11 | 463 |
| 12 | 926 |
| 13 | 1730 |
| 14 | 3095 |
| 15 | 5461 |
| 16 | 9829 |
| 17 | 18565 |
| 18 | 37130 |
| 19 | 77540 |
| 20 | 164921 |
| 21 | 349525 |
| 22 | 728575 |
| 23 | 1486675 |
| 24 | 2973350 |
| 25 | 5858126 |
| 26 | 11450531 |
| 27 | 22369621 |
| 28 | 43942081 |
| 29 | 87087001 |
| 30 | 174174002 |
| 31 | 350739488 |
| 32 | 708653429 |
| 33 | 1431655765 |
| 34 | 2884834891 |
| 35 | 5791193143 |