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

8, 9, 25, 32, 40, 45, 49, 56, 63, 64, 75, 81, 88, 96, 99, 104, 117, 121, 125, 128, 136, 147, 152, 153, 162, 169, 171, 175, 184, 200, 207, 224, 225, 232, 243, 245, 248, 250, 261, 275, 279, 280, 288, 289, 296, 315, 320, 325, 328, 333, 343, 344, 352

Offset: 1

Author

Franklin T. Adams-Watters, Dec 16 2006

Keywords

• nonn

Comments

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

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A124184.

Programs

Mathematica

Select[Range[400],MemberQ[Divisible[#,FactorInteger[#][[All,2]]],False]&] (* Harvey P. Dale, Mar 25 2018 *)