This is a great website. Didn't know about it. Made me check out the infamous https://oeis.org/A000127 sequence, for which there seem to be many more cases showing [this unexpected change from 32 to 31](https://oeis.org/search?q=1%2C2%2C4%2C8%2C16%2C31&language=english&go=Search).

south_korea_ln

science

[Daily puzzle] Diameter of circle

That would give diameters $$\frac{1}{2}, \frac{1}{6}, \frac{1}{12}, \frac{1}{20}, \frac{1}{30}, ...$$

For the sequence of divisors there are [multiple candidates](https://oeis.org/search?q=2%2C6%2C12%2C20%2C30&language=english&go=Search)