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 | 2 |
| 3 | 6 |
| 4 | 16 |
| 5 | 36 |
| 6 | 76 |
| 7 | 152 |
| 8 | 294 |
| 9 | 554 |
| 10 | 1024 |
| 11 | 1864 |
| 12 | 3352 |
| 13 | 5968 |
| 14 | 10538 |
| 15 | 18478 |
| 16 | 32208 |
| 17 | 55852 |
| 18 | 96420 |
| 19 | 165800 |
| 20 | 284110 |
| 21 | 485330 |
| 22 | 826752 |
| 23 | 1404816 |
| 24 | 2381616 |
| 25 | 4029216 |
| 26 | 6803666 |
| 27 | 11468502 |
| 28 | 19300624 |
| 29 | 32433204 |
| 30 | 54426364 |
| 31 | 91216184 |
| 32 | 152691702 |
| 33 | 255313658 |
| 34 | 426460288 |
| 35 | 711634648 |