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A276504
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Numbers n such that phi(n) = phi(n+11), with Euler's totient function phi = A000010.
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3
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7, 11, 27, 33, 45, 63, 135, 165, 285, 304, 345, 765, 855, 964, 1144, 1575, 1744, 2134, 2295, 2805, 6424, 6604, 10725, 23584, 24244, 27645, 28875, 31174, 31354, 35445, 40755, 44164, 46672, 57046, 57057, 61444, 64005, 78975, 82095, 90195
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Range[150000], EulerPhi[#] == EulerPhi[# + 11] &]
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PROG
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(Magma) [n: n in [1..100000] | EulerPhi(n) eq EulerPhi(n+11)];
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CROSSREFS
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Cf. similar sequences listed in A276503.
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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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