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A072415
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a(1) = 2; a(n) = a(n-1)-th even nontotient number.
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2
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2, 26, 182, 878, 3626, 13508, 46922, 155156, 494468, 1529590, 4615074, 13633310, 39548078, 112918434, 317920082, 883996002
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OFFSET
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1,1
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LINKS
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FORMULA
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a(3)=182 is the 26th = a(2)-th term in A005277.
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MATHEMATICA
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a = Table[0, {10^6}]; Do[b = EulerPhi[n]/2; If[b < 10^6 + 1, a[[b]] = 1], {n, 1, 2 10^7}]; b = Select[ Range[10^6], a[[ # ]] == 0 &]; c = 1; Do[ Print[c]; c = 2b[[c]], {n, 0, 8}]
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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