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A283768
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Numbers k such that U(k) is odd, where U = A001950 = upper Wythoff sequence.
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3
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2, 3, 5, 6, 9, 12, 15, 16, 18, 19, 22, 25, 28, 29, 31, 32, 34, 35, 38, 41, 42, 44, 45, 47, 48, 51, 54, 55, 57, 58, 60, 61, 64, 67, 70, 71, 73, 74, 77, 80, 83, 84, 86, 87, 89, 90, 93, 96, 97, 99, 100, 102, 103, 106, 109, 110, 112, 113, 115, 116, 119, 122, 125
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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a(n+1) - a(n) is in {1,2,3} for every n.
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MATHEMATICA
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r = GoldenRatio^2; z = 250; t = Table[Floor[n*r], {n, 1, z}]; u = Mod[t, 2];
Flatten[Position[u, 0]] (* A283767 *)
Flatten[Position[u, 1]] (* A283768 *)
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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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