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 | 0 |
| 1 | 0 |
| 2 | 2 |
| 3 | 7 |
| 4 | 14 |
| 5 | 38 |
| 6 | 83 |
| 7 | 193 |
| 8 | 421 |
| 9 | 917 |
| 10 | 1969 |
| 11 | 4210 |
| 12 | 8908 |
| 13 | 18763 |
| 14 | 39287 |
| 15 | 81940 |
| 16 | 170270 |
| 17 | 352726 |
| 18 | 728663 |
| 19 | 1501711 |
| 20 | 3088326 |
| 21 | 6339424 |
| 22 | 12991312 |
| 23 | 26583389 |
| 24 | 54323352 |
| 25 | 110876435 |
| 26 | 226057023 |
| 27 | 460432903 |
| 28 | 936963134 |
| 29 | 1905110662 |
| 30 | 3870698364 |
| 31 | 7858803605 |
| 32 | 15945759386 |