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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 6 |
| 8 | 10 |
| 9 | 16 |
| 10 | 31 |
| 11 | 61 |
| 12 | 147 |
| 13 | 392 |
| 14 | 1274 |
| 15 | 5036 |
| 16 | 25617 |
| 17 | 164796 |
| 18 | 1337848 |
| 19 | 13734745 |
| 20 | 178587364 |
| 21 | 2911304940 |
| 22 | 58919069858 |
| 23 | 1474647067521 |
| 24 | 45599075629687 |