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 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 6 |
| 5 | 11 |
| 6 | 26 |
| 7 | 47 |
| 8 | 103 |
| 9 | 187 |
| 10 | 397 |
| 11 | 727 |
| 12 | 1519 |
| 13 | 2806 |
| 14 | 5809 |
| 15 | 10814 |
| 16 | 22254 |
| 17 | 41702 |
| 18 | 85460 |
| 19 | 161042 |
| 20 | 329002 |
| 21 | 622932 |
| 22 | 1269578 |
| 23 | 2413644 |
| 24 | 4909788 |
| 25 | 9367188 |
| 26 | 19024888 |
| 27 | 36408748 |
| 28 | 73850908 |
| 29 | 141714823 |
| 30 | 287137498 |
| 31 | 552320023 |
| 32 | 1118042743 |
| 33 | 2155201063 |
| 34 | 4359162493 |
| 35 | 8419091443 |