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A286809
Positions of 1 in A286807; complement of A286808.
3
3, 4, 6, 7, 9, 11, 13, 14, 16, 18, 20, 22, 24, 26, 28, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122
OFFSET
1,1
COMMENTS
Conjecture: a(n)/n -> 2, and -2 < 2 - a(n)/n < 3 for n >= 1.
LINKS
MATHEMATICA
s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
w[n_] := StringReplace[w[n - 1], {"00" -> "001", "1" -> "101"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[11]] - 48 (* A286807 *)
Flatten[Position[st, 0]] (* A286808 *)
Flatten[Position[st, 1]] (* A286809 *)
CROSSREFS
Sequence in context: A047516 A247425 A236444 * A352178 A244239 A006855
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 06 2017
STATUS
approved