%I #11 Oct 11 2022 11:11:35
%S 1,0,1,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,0,1,
%T 1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,
%U 1,0,1,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1
%N Indicator function of A140100.
%C a(n) = 1 iff n is in A140100.
%H Jeffrey Shallit, <a href="https://arxiv.org/abs/2210.03996">Some Tribonacci conjectures</a>, arXiv:2210.03996 [math.CO], 2022.
%F a(n)+A305386(n) = A305387(n)+A305388(n) = 1 for all n.
%Y The indicator functions for A140100, A140101, A140102, A140103 are given in A305385, A305386, A305387, A305388.
%K nonn
%O 1
%A _N. J. A. Sloane_, Jun 21 2018