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) |
|---|---|
| 4 | 1 |
| 5 | 2 |
| 6 | 8 |
| 7 | 19 |
| 8 | 56 |
| 9 | 147 |
| 10 | 404 |
| 11 | 1082 |
| 12 | 2954 |
| 13 | 8001 |
| 14 | 21865 |
| 15 | 59759 |
| 16 | 164085 |
| 17 | 451465 |
| 18 | 1246358 |
| 19 | 3448876 |
| 20 | 9569376 |
| 21 | 26611517 |
| 22 | 74172493 |
| 23 | 207159274 |
| 24 | 579724677 |
| 25 | 1625287220 |
| 26 | 4564461309 |
| 27 | 12839597611 |
| 28 | 36172421770 |
| 29 | 102053738981 |
| 30 | 288317817804 |
| 31 | 815591326704 |
| 32 | 2309951078955 |