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A136902
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Numbers n such that n and the square of n use only the digits 0, 2, 4 and 6.
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1
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0, 2, 20, 200, 2000, 20000, 20602, 200000, 206020, 2000000, 2006002, 2060200, 20000000, 20060020, 20602000, 200000000, 200060002, 200600200, 206020000, 2000000000, 2000600020, 2006002000, 2060200000, 20000000000, 20000600002, 20006000200, 20060020000, 20602000000, 200000000000, 200006000020, 200060002000, 200600200000
(list; graph; refs; listen; history; internal format)
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