[seqfan] A197680

Vladimir Shevelev shevelev at bgu.ac.il
Sun Nov 15 09:50:10 CET 2015


Is 256 a term of A197680?
It seems that the name "Numbers whose 
prime factors have powers that are squares"
is a bit ambiguous. There are two variants
of the understanding it.
1) All exponents in prime power factorization
of terms are squares;
2) All such exponents are squares or of the form
k*m^2, where k,m>=2 ("have squares").
 What is right?
P.S. By 1), in Oct 14 I suggested a reformulation
of the name: "Exponentially squares", but yet my 
comments have not been published. 

Best regards,
Vladimir



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