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 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 8 |
| 6 | 17 |
| 7 | 38 |
| 8 | 83 |
| 9 | 174 |
| 10 | 367 |
| 11 | 771 |
| 12 | 1606 |
| 13 | 3324 |
| 14 | 6849 |
| 15 | 14054 |
| 16 | 28743 |
| 17 | 58605 |
| 18 | 119161 |
| 19 | 241717 |
| 20 | 489345 |
| 21 | 988945 |
| 22 | 1995604 |
| 23 | 4021710 |
| 24 | 8095815 |
| 25 | 16281400 |
| 26 | 32716231 |
| 27 | 65694106 |
| 28 | 131833462 |
| 29 | 264423116 |
| 30 | 530128036 |
| 31 | 1062424867 |
| 32 | 2128513095 |