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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 7 |
| 5 | 7 |
| 6 | 18 |
| 7 | 40 |
| 8 | 85 |
| 9 | 148 |
| 10 | 285 |
| 11 | 584 |
| 12 | 1231 |
| 13 | 2516 |
| 14 | 5069 |
| 15 | 10175 |
| 16 | 20306 |
| 17 | 40000 |
| 18 | 78328 |
| 19 | 154233 |
| 20 | 307586 |
| 21 | 620903 |
| 22 | 1262129 |
| 23 | 2566697 |
| 24 | 5193429 |
| 25 | 10424746 |
| 26 | 20761986 |
| 27 | 41131719 |
| 28 | 81358316 |
| 29 | 161239595 |
| 30 | 320900400 |
| 31 | 641688619 |
| 32 | 1287937462 |
| 33 | 2589941043 |
| 34 | 5208522925 |
| 35 | 10461756080 |