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) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 23 |
| 3 | 76 |
| 4 | 233 |
| 5 | 682 |
| 6 | 1935 |
| 7 | 5368 |
| 8 | 14641 |
| 9 | 39406 |
| 10 | 104935 |
| 11 | 276996 |
| 12 | 725849 |
| 13 | 1890258 |
| 14 | 4896415 |
| 15 | 12624752 |
| 16 | 32419297 |
| 17 | 82951766 |
| 18 | 211573047 |
| 19 | 538086716 |
| 20 | 1364974409 |
| 21 | 3454480250 |
| 22 | 8724052271 |
| 23 | 21989264232 |
| 24 | 55326056977 |
| 25 | 138975010110 |