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Rémi Eismann

One day, one decomposition
A006532: Numbers whose sum of divisors is a square

3D graph ➡️ decompwlj.com/3Dgraph/A006532.
2D graph, first 500 terms ➡️ decompwlj.com/2Dgraph500terms/

@decompwlj The rotatable graphics rocks! How are these three parameters defined? I found no link/ref.

@decompwlj Thanks a lot! Great work! I wonder how "my" sequence (A359303) looks?

@rjf_berger Quickly seen, I am afraid that the growth is too strong. The decomposition is possible if a(n+1) < 3/2 × a(n)

@decompwlj It's actually growing roughly with exp(an+b) so it's almost everywhere subexponential except some smaller n.