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 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 14 |
| 5 | 20 |
| 6 | 22 |
| 7 | 29 |
| 8 | 31 |
| 9 | 40 |
| 10 | 80 |
| 11 | 85 |
| 12 | 224 |
| 13 | 767 |
| 14 | 952 |
| 15 | 3592 |
| 16 | 4016 |
| 17 | 4187 |
| 18 | 9239 |
| 19 | 17684 |
| 20 | 20716 |
| 21 | 30791 |