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5, 6, 9, 10, 17, 18, 21, 22, 29, 30, 33, 34, 41, 42, 45, 46, 49, 50, 53, 54, 57, 58, 61, 62, 69, 70, 73, 74, 81, 82, 85, 86, 89, 90, 93, 94, 97, 98, 101, 102, 109, 110, 113, 114, 121, 122, 125, 126, 133, 134, 137, 138, 145, 146, 149, 150, 157, 158, 161, 162
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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, A285504 = 11110011001..., in which 0 is in positions 5,6,9,10,...
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MATHEMATICA
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s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {0, 0, 1, 1}}] &, {0}, 8] (* A285501 *)
Flatten[Position[s, 0]] (* A285502 *)
Flatten[Position[s, 1]] (* A285503 *)
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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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