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 | 2 |
| 2 | 11 |
| 3 | 2713 |
| 4 | 4066709 |
| 5 | 289593761 |
| 6 | 30236674150891013353640837416685668536004108580572237299601 |
| 7 | 45323907186142905348893078704293178796516046414129798590935901 |