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%I #17 Nov 18 2023 08:27:13
%S 2,8,12,16,18,20,24,28,30,32,36,40,42,44,48,50,52,54,56,60,64,66,68,
%T 70,72,76,78,80,84,88,90,92,96,98,100,102,104,108,110,112,114,116,120,
%U 124,126,128,130,132,136,138,140,144,148,150
%N Twice nonprime numbers.
%C Besides a(1), is this sequence a subset of A091375? - _Bill McEachen_, Dec 18 2016
%F a(n) = A018252(n)*2.
%t 2*Select[Range[75],!PrimeQ[#]&] (* _Stefano Spezia_, Nov 18 2023 *)
%o (PARI) is(n)=n%2==0 && !isprime(n/2) && n \\ _Charles R Greathouse IV_, Feb 21 2017
%Y Cf. A018252.
%K easy,nonn
%O 1,1
%A _Omar E. Pol_, May 16 2008
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