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) |
|---|---|
| 3 | 1 |
| 4 | 8 |
| 5 | 23 |
| 6 | 52 |
| 7 | 107 |
| 8 | 210 |
| 9 | 401 |
| 10 | 754 |
| 11 | 1405 |
| 12 | 2604 |
| 13 | 4811 |
| 14 | 8872 |
| 15 | 16343 |
| 16 | 30086 |
| 17 | 55365 |
| 18 | 101862 |
| 19 | 187385 |
| 20 | 344688 |
| 21 | 634015 |
| 22 | 1166172 |
| 23 | 2144963 |
| 24 | 3945242 |
| 25 | 7256473 |
| 26 | 13346778 |
| 27 | 24548597 |
| 28 | 45151956 |
| 29 | 83047443 |
| 30 | 152748112 |
| 31 | 280947631 |
| 32 | 516743310 |