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 | 1 |
| 2 | 8 |
| 3 | 22 |
| 4 | 64 |
| 5 | 182 |
| 6 | 454 |
| 7 | 1046 |
| 8 | 2546 |
| 9 | 5056 |
| 10 | 11638 |
| 11 | 33262 |
| 12 | 101112 |
| 13 | 191802 |
| 14 | 688304 |
| 15 | 769106 |
| 16 | 1102184 |
| 17 | 5220960 |
| 18 | 23546744 |
| 19 | 49886556 |
| 20 | 135889790 |
| 21 | 142614238 |
| 22 | 121124812 |
| 23 | 570957758 |