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A286489
Positions of 1 in A286487; complement of A286488.
3
2, 3, 5, 8, 9, 10, 11, 12, 14, 15, 16, 17, 20, 21, 23, 26, 27, 28, 29, 30, 33, 34, 36, 37, 38, 39, 41, 44, 45, 46, 47, 48, 50, 51, 52, 53, 56, 57, 59, 60, 61, 62, 64, 67, 68, 69, 70, 71, 74, 75, 77, 80, 81, 82, 83, 84, 86, 87, 88, 89, 92, 93, 95, 98, 99, 100
OFFSET
1,1
COMMENTS
a(n) - a(n-1) is in {1,2,3} for n>=2. Conjecture: a(n)/n -> 3/2.
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