A284937 - OEIS

%I #4 Apr 18 2017 15:25:48

%S 2,3,4,7,8,11,12,16,18,19,20,23,24,28,30,31,32,35,36,40,42,44,45,46,

%T 50,51,52,55,56,59,60,64,66,67,68,71,72,76,78,80,81,82,86,87,88,91,92,

%U 95,96,100,102,103,104,107,108,112,114,116,117,118,122,123

%N Positions of 1 in A284935; complement of A284936.

%C Conjecture:  2n - a(n) is in {0,1,2} for n >= 1.

%H Clark Kimberling, <a href="/A284937/b284937.txt">Table of n, a(n) for n = 1..10000</a>

%e As a word, A284935 = 011100..., in which 1 is in positions 2,3,4,7,...

%t s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 1, 0, 0}}] &, {0}, 6] (* A284935 *)

%t Flatten[Position[s, 0]]  (* A284936 *)

%t Flatten[Position[s, 1]]  (* A284937 *)

%Y Cf. A284936, A284937.

%K nonn,easy

%O 1,1

%A _Clark Kimberling_, Apr 18 2017