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A286727 Positions of 0 in A286063; complement of A286728. 3
1, 2, 5, 6, 8, 9, 10, 11, 14, 15, 16, 17, 19, 20, 23, 24, 26, 27, 28, 29, 31, 32, 35, 36, 37, 38, 41, 42, 44, 45, 46, 47, 50, 51, 52, 53, 55, 56, 59, 60, 61, 62, 65, 66, 68, 69, 70, 71, 73, 74, 77, 78, 80, 81, 82, 83, 86, 87, 88, 89, 91, 92, 95, 96, 98, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The number d(n) = 3n/2 - a(n) is in {-1/2, 0, 1/2, 1} for n >= 1.  Specifically,

d(n) = -1/2 if n is in A129771; d(n) = 1/2 if n is in A092246;

d(n) = 0 if n is in 2*A181155; d(n) = 1 if n is in 2*A026147.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

MATHEMATICA

s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];

w[n_] := StringReplace[w[n - 1], {"00" -> "001", "1" -> "100"}]

Table[w[n], {n, 0, 8}]

st = ToCharacterCode[w[11]] - 48   (* A286063 *)

Flatten[Position[st, 0]]  (* A286727 *)

Flatten[Position[st, 1]]  (* A286728 *)

CROSSREFS

Cf. A286063, A286728.

Sequence in context: A126971 A175354 A224778 * A090946 A299417 A047442

Adjacent sequences:  A286724 A286725 A286726 * A286728 A286729 A286730

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 05 2017

STATUS

approved

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Last modified January 19 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)