This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A367018 #51 Jan 20 2024 03:15:06
%S A367018 10,14,15,21,22,26,33,34,35,38,39,46,51,55,57,58,62,65,69,70,74,77,82,
%T A367018 85,86,87,91,93,94,95,105,106,110,111,115,118,119,122,123,129,130,133,
%U A367018 134,141,142,143,145,146,154,155,158,159,161,165,166,170,177,178,182
%N A367018 Composite squarefree k that are not divisible by 6.
%C A367018 The asymptotic density of this sequence is 1/(2*Pi^2). - _Amiram Eldar_, Jan 20 2024
%H A367018 Michael De Vlieger, <a href="/A367018/b367018.txt">Table of n, a(n) for n = 1..10000</a>
%F A367018 Intersection of A047253 and A120944 = { k : Omega(k) > omega(k) = 1, k mod 6 != 0 }.
%e A367018 70 is in this sequence since it is composite and squarefree but not divisible by 6. It does not appear in A006881 since it is the product of 3 primes.
%t A367018 Select[Range[180], And[SquareFreeQ[#], CompositeQ[#], Mod[#, 6] != 0] &]
%Y A367018 Cf. A047253, A120944, A367455.
%K A367018 nonn,easy
%O A367018 1,1
%A A367018 _Michael De Vlieger_, Jan 15 2024