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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
| 6 | 6 |
| 7 | 14 |
| 8 | 26 |
| 9 | 52 |
| 10 | 103 |
| 11 | 201 |
| 12 | 400 |
| 13 | 784 |
| 14 | 1552 |
| 15 | 3056 |
| 16 | 6032 |
| 17 | 11897 |
| 18 | 23465 |
| 19 | 46292 |
| 20 | 91302 |
| 21 | 180110 |
| 22 | 355258 |
| 23 | 700772 |
| 24 | 1382287 |
| 25 | 2726609 |
| 26 | 5378336 |
| 27 | 10608928 |
| 28 | 20926496 |
| 29 | 41278176 |
| 30 | 81422624 |
| 31 | 160608817 |
| 32 | 316806289 |
| 33 | 624911012 |
| 34 | 1232657862 |
| 35 | 2431458958 |