One day, one decomposition
A003277: Cyclic numbers: k such that k and phi(k) are relatively prime; also k such that there is just one group of order k, i.e., A000001(n) = 1
3D graph #threejs #webGL https://decompwlj.com/3Dgraph/Cyclic_numbers.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/Cyclic_numbers.html