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 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 10 |
| 10 | 56 |
| 11 | 232 |
| 12 | 794 |
| 13 | 2380 |
| 14 | 6476 |
| 15 | 16384 |
| 16 | 39203 |
| 17 | 89846 |
| 18 | 199140 |
| 19 | 430104 |
| 20 | 910596 |
| 21 | 1898712 |
| 22 | 3913704 |
| 23 | 7997952 |
| 24 | 16241061 |
| 25 | 32828226 |
| 26 | 66137152 |
| 27 | 132932104 |
| 28 | 266752238 |
| 29 | 534688516 |
| 30 | 1070937812 |
| 31 | 2143911424 |
| 32 | 4290452423 |