Plots unique number of ways to make an even number >= 4 out of two primes
Here is the result of running
goldbach(1000)
As a quick way to test this function, you can insert this function into Octave and run goldbach(500) at https://octave-online.net/.
In the future, it would be interesting to have a moving average plot that overlays on top of this graph to see how many different pairs of primes can be used to make any even number.