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A124438 Numbers that are not divisible by at least one of the (positive) exponents in their prime factorization. 2

%I

%S 8,9,25,32,40,45,49,56,63,64,75,81,88,96,99,104,117,121,125,128,136,

%T 147,152,153,162,169,171,175,184,200,207,224,225,232,243,245,248,250,

%U 261,275,279,280,288,289,296,315,320,325,328,333,343,344,352

%N Numbers that are not divisible by at least one of the (positive) exponents in their prime factorization.

%C Except for 1, every member of A124184 is in this sequence. Also, this sequence does not contain any squarefree numbers.

%H Harvey P. Dale, <a href="/A124438/b124438.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[400],MemberQ[Divisible[#,FactorInteger[#][[All,2]]],False]&] (* _Harvey P. Dale_, Mar 25 2018 *)

%Y Cf. A124184.

%K nonn

%O 1,1

%A Franklin T. Adams-Watters, Dec 16 2006

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Last modified October 22 03:04 EDT 2019. Contains 328315 sequences. (Running on oeis4.)