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A283766
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Numbers k such that L(k) is odd, where L = A000201 = lower Wythoff sequence.
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5
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1, 2, 6, 7, 11, 12, 13, 16, 17, 18, 21, 22, 23, 27, 28, 32, 33, 34, 37, 38, 39, 42, 43, 44, 48, 49, 53, 54, 58, 59, 60, 63, 64, 65, 69, 70, 74, 75, 79, 80, 81, 84, 85, 86, 90, 91, 95, 96, 100, 101, 102, 105, 106, 107, 110, 111, 112, 116, 117, 121, 122, 123
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OFFSET
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1,2
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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 {1,3,4} for every n.
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MATHEMATICA
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r = GoldenRatio; z = 250; t = Table[Floor[n*r], {n, 1, z}]; u = Mod[t, 2];
Flatten[Position[u, 0]] (* A283765 *)
Flatten[Position[u, 1]] (* A283766 *)
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PROG
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(Scheme, with Antti Karttunen's IntSeq-library)
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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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