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 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 5 |
| 5 | 6 |
| 6 | 15 |
| 7 | 21 |
| 8 | 49 |
| 9 | 82 |
| 10 | 184 |
| 11 | 341 |
| 12 | 766 |
| 13 | 1530 |
| 14 | 3428 |
| 15 | 7249 |
| 16 | 16394 |
| 17 | 36009 |
| 18 | 82492 |
| 19 | 186485 |
| 20 | 433096 |
| 21 | 1001495 |
| 22 | 2358182 |
| 23 | 5554644 |
| 24 | 13255532 |
| 25 | 31718030 |
| 26 | 76656602 |
| 27 | 185982207 |
| 28 | 454889643 |
| 29 | 1117496012 |
| 30 | 2764222322 |
| 31 | 6868902152 |
| 32 | 17172601190 |