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A113622
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Numbers k such that the reverse of the representation of phi(k) is a substring of k, in base 10.
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1
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1, 21, 63, 270, 291, 1065, 2991, 6102, 10087, 10279, 10654, 16528, 144069, 1440069, 10253179, 10657654, 14400069, 16163608, 46676013, 69460293, 2346534651, 2369436474, 6313047393, 10270341004, 10657657654, 14406534069, 23400000651
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OFFSET
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1,2
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COMMENTS
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If p = 480...023 is prime, then k = 3*p = 1440...069 and phi(k) = 960...044, thus k belongs to the sequence.
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LINKS
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EXAMPLE
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phi(1_440069) = 960044.
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MATHEMATICA
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lst = {}; Do[If[{}!= StringPosition[ToString@n, StringReverse@ToString@EulerPhi@n], AppendTo[lst, n], {n, 2*10^7}]; lst
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CROSSREFS
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KEYWORD
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base,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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