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A086946
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a(n) = k where R(k+6)=2.
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3
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14, 194, 1994, 19994, 199994, 1999994, 19999994, 199999994, 1999999994, 19999999994, 199999999994, 1999999999994, 19999999999994, 199999999999994, 1999999999999994, 19999999999999994, 199999999999999994
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