From left to right is the `N` value. From bottom to top is the `a(n)` value. A342730 a(n) = floor((frac(en) + 1) prime(n+1)). https://oeis.org/A342730 ht

From left to right is the `N` value. From bottom to top is the `a(n)` value. A342730 a(n) = floor((frac(en) + 1) prime(n+1)). https://oeis.org/A342730 https://oeis.org/A342730 Knowing the N value and the previous nearby prime points, I guess it's possible to narrow down the search range for the next prime value.