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 | 1 |
| 3 | 385 |
| 4 | 46081 |
| 5 | 3809281 |
| 6 | 27335393281 |
| 7 | 219971402072065 |
| 8 | 1196544590358773761 |
| 9 | 34605327838407410319361 |
| 10 | 15221801372279275206853263361 |
| 11 | 5309386094113063403935896849874945 |