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A193276
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Composite numbers n such that phi(n) divides 3n - 3.
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0
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OFFSET
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1,1
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COMMENTS
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Next term > 10^9.
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LINKS
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MATHEMATICA
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t={}; Do[If[PrimeQ[n]==False&&IntegerQ[(n-1)*3/EulerPhi[n]], Print[n]; AppendTo[t, n]], {n, 2, 10^5}]; t
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PROG
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(PARI) p=3; forprime(q=5, 1e8, forstep(n=p\4*4, q-1, 4, if((3*n-3)%eulerphi(n)==0, print1(n", "))); p=q) \\ Charles R Greathouse IV, Jul 24 2011
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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