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 | 4 |
| 3 | 8 |
| 4 | 22 |
| 5 | 40 |
| 6 | 112 |
| 7 | 182 |
| 8 | 688 |
| 9 | 844 |
| 10 | 2090 |
| 11 | 2478 |
| 12 | 21056 |
| 13 | 20762 |
| 14 | 112864 |
| 15 | 113870 |
| 16 | 204796 |
| 17 | 141246 |
| 18 | 2255872 |
| 19 | 1610768 |
| 20 | 18946704 |
| 21 | 15066098 |
| 22 | 20640826 |
| 23 | 12378248 |
| 24 | 332333696 |
| 25 | 279217826 |
| 26 | 531539936 |
| 27 | 618937930 |
| 28 | 1715570198 |
| 29 | 330283576 |
| 30 | 20131457680 |