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A053911
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Squares composed of digits {1,6,9}.
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2
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1, 9, 16, 169, 196, 961, 69169, 69696, 9696996, 16966161, 611919169, 6661661161, 696199996996, 1911961611169, 99191919116196, 116116119966961, 116696699999166169, 699666116199699961, 996111661161199969
(list; graph; refs; listen; history; internal format)
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