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Indicator function of A140100.
4

%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