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A189222 Zero-one sequence based on the sequence (3n): a(A008585(k))=a(k); a(A001651(k))=1-a(k), a(1)=0, a(2)=0. 5

%I #10 Feb 12 2018 16:42:33

%S 1,1,1,0,1,1,0,0,1,1,1,0,0,0,1,0,1,1,1,1,0,0,1,0,0,0,1,0,0,1,1,1,1,0,

%T 1,0,1,1,0,0,1,0,1,0,1,0,0,0,0,1,1,0,1,1,0,0,1,1,1,1,0,1,0,0,1,0,0,1,

%U 1,1,1,0,1,0,0,0,1,0,0,0,1,1,1,0,0,0,0,0,0,1,1,0,1,1,1,1,0,1,1,1,0,0,0,0,1,0,1,0,0,1,1,1,1,1,0,1,0,1,1,0,0,0,1,0,1,0,1,1,1,1,1,0,1,0,1

%N Zero-one sequence based on the sequence (3n): a(A008585(k))=a(k); a(A001651(k))=1-a(k), a(1)=0, a(2)=0.

%H Ivan Neretin, <a href="/A189222/b189222.txt">Table of n, a(n) for n = 1..10000</a>

%t u[n_] := 3n; (*A008585*)

%t a[1] = 0; a[2]=0; h = 128;

%t c = (u[#1] &) /@ Range[2h];

%t d = (Complement[Range[Max[#1]], #1] &)[c]; (*A001651*)

%t Table[a[d[[n]]] = 1 - a[n], {n, 1, h - 1}]; (*A189222*)

%t Table[a[c[[n]]] = a[n], {n, 1, h}] (*A189222*)

%t Flatten[Position[%, 0]] (*A189223*)

%t Flatten[Position[%%, 1]] (*A189224*)

%Y Cf. A188967, A189223, A189224.

%K nonn

%O 1

%A _Clark Kimberling_, Apr 18 2011

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Last modified March 28 14:21 EDT 2024. Contains 371254 sequences. (Running on oeis4.)