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Positions of 0 in A287179.
4

%I #4 May 23 2017 14:31:46

%S 3,6,8,10,13,16,18,20,22,24,26,29,31,33,36,39,41,43,46,49,51,53,55,57,

%T 59,62,64,66,68,70,72,74,76,78,81,83,85,88,91,93,95,97,99,101,104,106,

%U 108,111,114,116,118,121,124,126,128,130,132,134,137,139,141

%N Positions of 0 in A287179.

%H Clark Kimberling, <a href="/A287180/b287180.txt">Table of n, a(n) for n = 1..10000</a>

%t s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {2, 0}, 2 -> 1}] &, {0}, 9] (* A287179 *)

%t Flatten[Position[s, 0]] (* A287180 *)

%t Flatten[Position[s, 1]] (* A287181 *)

%t Flatten[Position[s, 2]] (* A287182 *)

%Y Cf. A287179, A287181, A287182.

%K nonn,easy

%O 1,1

%A _Clark Kimberling_, May 22 2017