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 | 5 |
| 2 | 22 |
| 3 | 79 |
| 4 | 259 |
| 5 | 777 |
| 6 | 2201 |
| 7 | 5911 |
| 8 | 15239 |
| 9 | 37865 |
| 10 | 91224 |
| 11 | 213741 |
| 12 | 488759 |
| 13 | 1093173 |
| 14 | 2396934 |
| 15 | 5160756 |
| 16 | 10928181 |
| 17 | 22787949 |
| 18 | 46848176 |
| 19 | 95046026 |
| 20 | 190466354 |
| 21 | 377295743 |
| 22 | 739319876 |
| 23 | 1433974869 |
| 24 | 2754597217 |
| 25 | 5243308562 |
| 26 | 9894376295 |
| 27 | 18517966608 |
| 28 | 34386781020 |
| 29 | 63378252332 |