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 | 1 |
| 3 | 1 |
| 4 | 5 |
| 5 | 9 |
| 6 | 24 |
| 7 | 46 |
| 8 | 109 |
| 9 | 209 |
| 10 | 469 |
| 11 | 922 |
| 12 | 1932 |
| 13 | 3858 |
| 14 | 7952 |
| 15 | 15831 |
| 16 | 32214 |
| 17 | 64351 |
| 18 | 129813 |
| 19 | 259566 |
| 20 | 521681 |
| 21 | 1042703 |
| 22 | 2091626 |
| 23 | 4182470 |
| 24 | 8376007 |
| 25 | 16752524 |
| 26 | 33530042 |
| 27 | 67055129 |
| 28 | 134165194 |
| 29 | 268328011 |
| 30 | 536763582 |
| 31 | 1073523097 |
| 32 | 2147268041 |
| 33 | 4294505929 |
| 34 | 8589506814 |
| 35 | 17178978145 |