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A137062
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Numbers n such that n and the square of n use only the digits 1, 5, 6, 8 and 9.
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1
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1, 9, 81, 816, 959, 8119, 9959, 81186, 81619, 811891, 816186, 816619, 956619, 8185169, 81169669, 81558666, 95685169, 816516186, 956659119, 8116968986, 8118866669, 8161616669, 8166516186, 8166816186, 9566566186, 9568696666, 9585851866, 9955811669, 9995581859, 81188661891, 81618616866, 81619966666, 811696966669, 811696985869
(list; graph; refs; listen; history; internal format)
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