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 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 5 |
| 7 | 12 |
| 8 | 26 |
| 9 | 56 |
| 10 | 118 |
| 11 | 244 |
| 12 | 499 |
| 13 | 1010 |
| 14 | 2027 |
| 15 | 4040 |
| 16 | 8004 |
| 17 | 15776 |
| 18 | 30956 |
| 19 | 60504 |
| 20 | 117845 |
| 21 | 228818 |
| 22 | 443057 |
| 23 | 855732 |
| 24 | 1649022 |
| 25 | 3171128 |
| 26 | 6086626 |
| 27 | 11662252 |
| 28 | 22309543 |
| 29 | 42614178 |
| 30 | 81286743 |
| 31 | 154856528 |
| 32 | 294660040 |
| 33 | 560052736 |
| 34 | 1063367384 |
| 35 | 2017030256 |