A363101 Even numbers that are neither prime powers nor squarefree.

12, 18, 20, 24, 28, 36, 40, 44, 48, 50, 52, 54, 56, 60, 68, 72, 76, 80, 84, 88, 90, 92, 96, 98, 100, 104, 108, 112, 116, 120, 124, 126, 132, 136, 140, 144, 148, 150, 152, 156, 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

Offset: 1

Author

Michael De Vlieger, May 19 2023

Keywords

• nonn

Comments

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

Links

• Michael De Vlieger, Table of n, a(n) for n = 1..10000

Crossrefs

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

Intersection of A013929 and A177712.

Programs

Mathematica

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