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 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 6 |
| 6 | 8 |
| 7 | 29 |
| 8 | 50 |
| 9 | 141 |
| 10 | 327 |
| 11 | 771 |
| 12 | 2047 |
| 13 | 4746 |
| 14 | 12644 |
| 15 | 30941 |
| 16 | 79886 |
| 17 | 204885 |
| 18 | 522242 |
| 19 | 1365056 |
| 20 | 3505825 |
| 21 | 9185742 |
| 22 | 23907116 |
| 23 | 62636476 |
| 24 | 164624803 |
| 25 | 432540010 |
| 26 | 1142827935 |
| 27 | 3017208675 |
| 28 | 7996379870 |
| 29 | 21211540268 |
| 30 | 56369770281 |
| 31 | 150086840133 |
| 32 | 400009010758 |