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 | 2 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 23 |
| 7 | 46 |
| 8 | 90 |
| 9 | 174 |
| 10 | 330 |
| 11 | 616 |
| 12 | 1133 |
| 13 | 2058 |
| 14 | 3698 |
| 15 | 6584 |
| 16 | 11630 |
| 17 | 20404 |
| 18 | 35587 |
| 19 | 61750 |
| 20 | 106666 |
| 21 | 183522 |
| 22 | 314642 |
| 23 | 537744 |
| 24 | 916441 |
| 25 | 1557842 |
| 26 | 2642018 |
| 27 | 4471276 |
| 28 | 7552470 |
| 29 | 12734364 |
| 30 | 21436655 |
| 31 | 36031486 |
| 32 | 60478458 |
| 33 | 101380758 |
| 34 | 169740378 |
| 35 | 283873144 |
| 36 | 474246725 |