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 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 2 |
| 7 | 6 |
| 8 | 12 |
| 9 | 29 |
| 10 | 61 |
| 11 | 138 |
| 12 | 294 |
| 13 | 649 |
| 14 | 1402 |
| 15 | 3073 |
| 16 | 6696 |
| 17 | 14676 |
| 18 | 32199 |
| 19 | 70764 |
| 20 | 156062 |
| 21 | 344209 |
| 22 | 762433 |
| 23 | 1687745 |
| 24 | 3751845 |
| 25 | 8333371 |
| 26 | 18582147 |
| 27 | 41399110 |
| 28 | 92557961 |
| 29 | 206765077 |
| 30 | 463343343 |
| 31 | 1037518525 |
| 32 | 2329710014 |
| 33 | 5227630580 |
| 34 | 11759537552 |
| 35 | 26436259384 |