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A286488
Positions of 0 in A286487; complement of A286489.
3
1, 4, 6, 7, 13, 18, 19, 22, 24, 25, 31, 32, 35, 40, 42, 43, 49, 54, 55, 58, 63, 65, 66, 72, 73, 76, 78, 79, 85, 90, 91, 94, 96, 97, 103, 104, 107, 112, 114, 115, 121, 122, 125, 127, 128, 134, 139, 140, 143, 148, 150, 151, 157, 162, 163, 166, 168, 169, 175
OFFSET
1,2
COMMENTS
a(n) - a(n-1) is in {1,2,3,5,6} for n>=2. Conjecture: a(n)/n -> 3.
LINKS
EXAMPLE
As a word, A286487 = 01101001111101111001..., in which 0 is in positions 1,4,6,7,13,18,...
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 9] (* A010060 *)
w = StringJoin[Map[ToString, s]]
w1 = StringReplace[w, {"0010" -> "1"}]
st = ToCharacterCode[w1] - 48 (* A286487 *)
Flatten[Position[st, 0]] (* A286488 *)
Flatten[Position[st, 1]] (* A286489 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 10 2017
STATUS
approved