Just check the numbers listed in one of the referenced articles, it is easy to expand it by induction to numbers greater than 6: https://beta.observablehq.com/

Just check the numbers listed in one of the referenced articles, it is easy to expand it by induction to numbers greater than 6: https://beta.observablehq.com/@montyxcantsin/unwinding-the-ulam-spiral https://beta.observablehq.com/@montyxcantsin/unwinding-the-u... It also helps to understand my other comment about the explanation of the pattern and GCD equivalence...