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A090019
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(3*10^n+2*0^n)/5.
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0
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1, 6, 60, 600, 6000, 60000, 600000, 6000000, 60000000, 600000000, 6000000000, 60000000000, 600000000000, 6000000000000, 60000000000000, 600000000000000, 6000000000000000, 60000000000000000, 600000000000000000
(list; graph; refs; listen; history; internal format)
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