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 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 12 |
| 5 | 20 |
| 6 | 35 |
| 7 | 56 |
| 8 | 92 |
| 9 | 142 |
| 10 | 221 |
| 11 | 330 |
| 12 | 496 |
| 13 | 724 |
| 14 | 1056 |
| 15 | 1512 |
| 16 | 2155 |
| 17 | 3028 |
| 18 | 4240 |
| 19 | 5866 |
| 20 | 8085 |