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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 5 |
| 6 | 10 |
| 7 | 11 |
| 8 | 16 |
| 9 | 20 |
| 10 | 52 |
| 11 | 75 |
| 12 | 106 |
| 13 | 112 |
| 14 | 132 |
| 15 | 371 |
| 16 | 3264 |
| 17 | 3424 |
| 18 | 5477 |
| 19 | 7516 |
| 20 | 10365 |
| 21 | 44557 |
| 22 | 150706 |