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 | 3 |
| 2 | 21 |
| 3 | 179 |
| 4 | 1607 |
| 5 | 14087 |
| 6 | 119749 |
| 7 | 994775 |
| 8 | 8139609 |
| 9 | 65978747 |
| 10 | 531817661 |
| 11 | 4272634559 |
| 12 | 34261960897 |
| 13 | 274453098179 |
| 14 | 2197189450437 |