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 | 21 |
| 6 | 37 |
| 7 | 60 |
| 8 | 99 |
| 9 | 156 |
| 10 | 244 |
| 11 | 371 |
| 12 | 561 |
| 13 | 829 |
| 14 | 1218 |
| 15 | 1763 |
| 16 | 2532 |
| 17 | 3594 |
| 18 | 5068 |
| 19 | 7075 |
| 20 | 9819 |