%I #7 Mar 04 2023 16:59:53
%S 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,0,1,1,
%T 0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,
%U 1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,0,1,1,0,1,1,0,1
%N 0 if n-th composite number A002808(n) is divisible by 3, otherwise 1.
%Y Cf. A002808, A181923, A361121, A361123.
%K nonn
%O 1
%A _Scott R. Shannon_, _Rémy Sigrist_ and _N. J. A. Sloane_, Mar 04 2023