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A288734
Positions of 0 in A288733; complement of A288735.
3
2, 3, 4, 6, 9, 12, 13, 14, 16, 17, 18, 20, 23, 26, 29, 32, 33, 34, 36, 37, 38, 40, 43, 46, 47, 48, 50, 51, 52, 54, 57, 60, 63, 66, 69, 72, 73, 74, 76, 77, 78, 80, 83, 86, 87, 88, 90, 91, 92, 94, 97, 100, 103, 106, 107, 108, 110, 111, 112, 114, 117, 120, 121
OFFSET
1,1
COMMENTS
Conjecture: a(n)/n -> 2, and 0 < 2 - a(n)/n) < 1 for n >= 1.
LINKS
MATHEMATICA
s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
w[n_] := StringReplace[w[n - 1], {"00" -> "1000", "10" -> "01"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[21]] - 48 (* A288733 *)
Flatten[Position[st, 0]] (* A288734 *)
Flatten[Position[st, 1]] (* A288735 *)
CROSSREFS
Sequence in context: A048249 A370843 A377151 * A332034 A332035 A318759
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 16 2017
STATUS
approved