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3, 4, 7, 8, 15, 16, 19, 20, 27, 28, 31, 32, 35, 36, 39, 40, 43, 44, 47, 48, 55, 56, 59, 60, 67, 68, 71, 72, 75, 76, 79, 80, 83, 84, 87, 88, 95, 96, 99, 100, 107, 108, 111, 112, 119, 120, 123, 124, 131, 132, 135, 136, 143, 144, 147, 148, 155, 156, 159, 160
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OFFSET
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1,1
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COMMENTS
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Conjecture: a(n)/n -> (3 + sqrt(5))/2.
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LINKS
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EXAMPLE
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As a word, A285661 = 110011001..., in which 0 is in positions 3,4,7,8,15,...
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MATHEMATICA
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s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 1, 0, 0}}] &, {0}, 9] (* A285661 *)
Flatten[Position[s, 0]] (* A285662 *)
Flatten[Position[s, 1]] (* A285663 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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