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A053903
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Squares composed of digits {1,5,6}.
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2
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1, 16, 1156, 6561, 111556, 556516, 6661561, 11115556, 165611161, 1111155556, 1566655561, 6661661161, 111111555556, 1551155666116, 1561665111556, 11111115555556, 156166661115556, 1111111155555556, 111111111555555556
(list; graph; refs; listen; history; internal format)
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