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Rémi Eismann

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 ➡️ decompwlj.com/3Dgraph/Cyclic_n
2D graph, first 500 terms ➡️ decompwlj.com/2Dgraph500terms/