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 | 1 |
| 3 | 5 |
| 4 | 8 |
| 5 | 7 |
| 6 | 2 |
| 7 | 17 |
| 8 | 44 |
| 9 | 53 |
| 10 | 1011 |
| 11 | 7262969 |
| 12 | 27755899054 |
| 13 | 10713771825916682198 |
| 14 | 1451983503000530523834049701901973110 |
| 15 | 5317619734003376302895262678416297955761358855419919105266696681033714 |