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A030487
When squared gives number composed of digits {2,5,7}.
+0
2
5, 15, 85, 165, 235, 1665, 15085, 16665, 166665, 268835, 1666665, 5076665, 16666665, 52683515, 165898335, 166666665, 278433515, 507668915, 850032485, 1508559835, 1666666665, 15085017485, 16666666665, 166666666665
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Maintained by
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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.
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