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 | 16383 |
| 1 | 2080895 |
| 2 | 31572879 |
| 3 | 107367603 |
| 4 | 178951509 |
| 5 | 852302358 |
| 6 | 7518471868 |
| 7 | 26845989734 |
| 8 | 45099980558 |
| 9 | 80807926649 |
| 10 | 413395279134 |
| 11 | 1650354704301 |
| 12 | 2886522559562 |
| 13 | 13195482418386 |
| 14 | 22129859675967 |
| 15 | 105554498880184 |