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) |
|---|---|
| 6 | 4 |
| 7 | 11 |
| 8 | 25 |
| 9 | 59 |
| 10 | 127 |
| 11 | 252 |
| 12 | 471 |
| 13 | 928 |
| 14 | 1734 |
| 15 | 3462 |
| 16 | 6615 |
| 17 | 12725 |
| 18 | 24396 |
| 19 | 46877 |
| 20 | 89854 |
| 21 | 173331 |
| 22 | 334737 |
| 23 | 647265 |
| 24 | 1253176 |