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 | 4 |
| 5 | 13 |
| 6 | 26 |
| 7 | 48 |
| 8 | 95 |
| 9 | 205 |
| 10 | 456 |
| 11 | 974 |
| 12 | 2024 |
| 13 | 4225 |
| 14 | 8930 |
| 15 | 18977 |
| 16 | 40199 |
| 17 | 84815 |
| 18 | 178867 |
| 19 | 377753 |
| 20 | 798542 |
| 21 | 1687806 |
| 22 | 3565554 |
| 23 | 7531030 |
| 24 | 15908857 |
| 25 | 33611337 |
| 26 | 71013181 |
| 27 | 150026395 |
| 28 | 316943191 |
| 29 | 669573901 |
| 30 | 1414567938 |
| 31 | 2988489622 |
| 32 | 6313604894 |