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 | 7 |
| 7 | 12 |
| 8 | 13 |
| 9 | 18 |
| 10 | 49 |
| 11 | 55 |
| 12 | 63 |
| 13 | 193 |
| 14 | 247 |
| 15 | 610 |
| 16 | 929 |
| 17 | 2173 |
| 18 | 3479 |
| 19 | 5494 |
| 20 | 11158 |
| 21 | 16754 |
| 22 | 30920 |
| 23 | 47752 |
| 24 | 50702 |
| 25 | 53725 |
| 26 | 68122 |
| 27 | 89214 |
| 28 | 180804 |