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2, 3, 4, 6, 7, 8, 10, 11, 12, 14, 16, 17, 18, 20, 21, 22, 24, 25, 26, 28, 30, 31, 32, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 58, 59, 60, 62, 64, 65, 66, 68, 69, 70, 72, 73, 74, 76, 78, 79, 80, 82, 83, 84, 86, 87, 88, 90, 92, 93
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OFFSET
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1,1
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COMMENTS
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Conjecture: -1 < n*sqrt(2) - a(n) < 2 for n >= 1.
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LINKS
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EXAMPLE
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As a word, A284939 = 0111011101..., in which 1 is in positions 2,3,4,6,7,8,...
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MATHEMATICA
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s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 1, 0, 1}}] &, {0}, 6] (* A284939 *)
Flatten[Position[s, 0]] (* A080580 *)
Flatten[Position[s, 1]] (* A284941 *)
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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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