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 | 3 |
| 3 | 5 |
| 4 | 11 |
| 5 | 23 |
| 6 | 47 |
| 7 | 99 |
| 8 | 203 |
| 9 | 423 |
| 10 | 877 |
| 11 | 1819 |
| 12 | 3777 |
| 13 | 7831 |
| 14 | 16253 |
| 15 | 33715 |
| 16 | 69953 |
| 17 | 145137 |
| 18 | 301113 |
| 19 | 624745 |
| 20 | 1296165 |
| 21 | 2689221 |
| 22 | 5579425 |
| 23 | 11575849 |
| 24 | 24016893 |
| 25 | 49828757 |
| 26 | 103381739 |
| 27 | 214490133 |
| 28 | 445011179 |
| 29 | 923282285 |
| 30 | 1915570171 |
| 31 | 3974309213 |
| 32 | 8245656195 |
| 33 | 17107588781 |