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 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 18 |
| 7 | 31 |
| 8 | 50 |
| 9 | 85 |
| 10 | 144 |
| 11 | 251 |
| 12 | 438 |
| 13 | 789 |
| 14 | 1420 |
| 15 | 2601 |
| 16 | 4792 |
| 17 | 8907 |
| 18 | 16618 |
| 19 | 31219 |
| 20 | 58814 |
| 21 | 111301 |
| 22 | 211180 |
| 23 | 401925 |
| 24 | 766648 |
| 25 | 1465899 |
| 26 | 2808082 |
| 27 | 5389509 |
| 28 | 10360576 |
| 29 | 19948155 |
| 30 | 38460946 |
| 31 | 74253513 |
| 32 | 143527180 |
| 33 | 277746975 |
| 34 | 538048150 |
| 35 | 1043342277 |
| 36 | 2025049108 |