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Even numbers that are neither prime powers nor squarefree.
2

%I #11 Oct 27 2023 16:38:46

%S 12,18,20,24,28,36,40,44,48,50,52,54,56,60,68,72,76,80,84,88,90,92,96,

%T 98,100,104,108,112,116,120,124,126,132,136,140,144,148,150,152,156,

%U 160,162,164,168,172,176,180,184,188,192,196,198,200,204,208,212,216,220,224,228,232,234,236,240,242

%N Even numbers that are neither prime powers nor squarefree.

%C Even numbers k such that A001222(k) > A001221(k) > 1.

%H Michael De Vlieger, <a href="/A363101/b363101.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[2, 242, 2], Nor[PrimePowerQ[#], SquareFreeQ[#]] &]

%Y Cf. A001221, A001222, A005418, A024619, A126706, A360769.

%Y Intersection of A013929 and A177712.

%K nonn

%O 1,1

%A _Michael De Vlieger_, May 19 2023