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) |
|---|---|
| 5 | 3 |
| 6 | 21 |
| 7 | 101 |
| 8 | 373 |
| 9 | 1174 |
| 10 | 3337 |
| 11 | 8642 |
| 12 | 21148 |
| 13 | 48713 |
| 14 | 108147 |
| 15 | 229984 |
| 16 | 476430 |
| 17 | 955667 |
| 18 | 1879169 |
| 19 | 3603751 |
| 20 | 6801106 |
| 21 | 12584048 |
| 22 | 22974152 |
| 23 | 41268291 |
| 24 | 73301654 |
| 25 | 128441712 |
| 26 | 222871187 |
| 27 | 382322022 |
| 28 | 650209758 |
| 29 | 1094918922 |
| 30 | 1829777544 |
| 31 | 3031447986 |
| 32 | 4987910871 |
| 33 | 8144753275 |